diff --git a/package-lock.json b/package-lock.json
index 8600ed3..5b7607d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -86,7 +86,7 @@
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+      "integrity": "sha512-PCVAQswWemu6UdxsDFFX/+gVeYqKAod3D3UVm91jHwynguOwAvYPhx8nNlM++NqRcK6CxxpUafjmhIdKiHibqg=="
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@@ -629,9 +629,19 @@
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-      "integrity": "sha1-DPaLud318r55YcOoUXjLhdunjLQ="
+      "version": "0.5.4",
+      "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.4.tgz",
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@@ -818,7 +828,7 @@
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@@ -865,7 +875,7 @@
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-      "integrity": "sha1-rT/0yG7C0CkyL1oCw6mmBslbP1k="
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@@ -933,7 +943,7 @@
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@@ -998,49 +1008,157 @@
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-      "integrity": "sha1-ZwI1ypWYiQpa6BcLg9tyK4Qu2Sc=",
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-        "content-type": "1.0.4",
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-        "etag": "1.8.1",
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@@ -1114,23 +1232,28 @@
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-      "integrity": "sha1-AHrqM9Gk0+QgF/YkhIrVjSEvgU8=",
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+      "resolved": "https://registry.npmjs.org/finalhandler/-/finalhandler-1.1.2.tgz",
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-        "on-finished": "2.3.0",
-        "parseurl": "1.3.2",
-        "statuses": "1.3.1",
-        "unpipe": "1.0.0"
+        "encodeurl": "~1.0.2",
+        "escape-html": "~1.0.3",
+        "on-finished": "~2.3.0",
+        "parseurl": "~1.3.3",
+        "statuses": "~1.5.0",
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-          "integrity": "sha1-+vUbnrdKrvOzrPStX2Gr8ky3uT4="
+          "version": "1.5.0",
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@@ -1251,9 +1374,9 @@
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-      "resolved": "https://registry.npmjs.org/forwarded/-/forwarded-0.1.2.tgz",
-      "integrity": "sha1-mMI9qxF1ZXuMBXPozszZGw/xjIQ="
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/forwarded/-/forwarded-0.2.0.tgz",
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@@ -1300,7 +1423,8 @@
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+          "bundled": true,
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@@ -1318,11 +1442,13 @@
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@@ -1335,15 +1461,18 @@
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@@ -1446,7 +1575,8 @@
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@@ -1456,6 +1586,7 @@
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@@ -1468,17 +1599,20 @@
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         "minimist": {
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@@ -1495,6 +1629,7 @@
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@@ -1567,7 +1702,8 @@
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@@ -1577,6 +1713,7 @@
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@@ -1652,7 +1789,8 @@
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@@ -1682,6 +1820,7 @@
         "string-width": {
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@@ -1699,6 +1838,7 @@
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@@ -1737,11 +1877,13 @@
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@@ -1989,6 +2131,14 @@
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       "integrity": "sha1-2WyScyB28HJxG2sQ/X1PZa2O4j0="
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+    "iconv-lite": {
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+      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.24.tgz",
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+      "requires": {
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@@ -2024,9 +2174,9 @@
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@@ -2372,12 +2522,12 @@
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@@ -2399,6 +2549,11 @@
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+      "resolved": "https://registry.npmjs.org/mime/-/mime-1.6.0.tgz",
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       "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.33.0.tgz",
@@ -2813,7 +2968,7 @@
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@@ -2882,12 +3037,12 @@
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-      "integrity": "sha1-ccDuOxAt4/IC87ZPYI0XP8uhqRg=",
+      "version": "2.0.7",
+      "resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.7.tgz",
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-        "forwarded": "0.1.2",
-        "ipaddr.js": "1.4.0"
+        "forwarded": "0.2.0",
+        "ipaddr.js": "1.9.1"
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@@ -2946,9 +3101,9 @@
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-      "integrity": "sha1-9JvmtIeJTdxA3MlKMi9hEJLgDV4="
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/range-parser/-/range-parser-1.2.1.tgz",
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@@ -3553,35 +3708,62 @@
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+    "safer-buffer": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
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-      "resolved": "https://registry.npmjs.org/send/-/send-0.15.6.tgz",
-      "integrity": "sha1-IPI6nJJbdiq4JwX+L52yUqzkfjQ=",
+      "version": "0.17.2",
+      "resolved": "https://registry.npmjs.org/send/-/send-0.17.2.tgz",
+      "integrity": "sha512-UJYB6wFSJE3G00nEivR5rgWp8c2xXvJ3OPWPhmuteU0IKj8nKbG3DrjiOmLwpnHGYWAVwA69zmTm++YG0Hmwww==",
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-        "destroy": "1.0.4",
-        "encodeurl": "1.0.2",
-        "escape-html": "1.0.3",
-        "etag": "1.8.1",
+        "depd": "~1.1.2",
+        "destroy": "~1.0.4",
+        "encodeurl": "~1.0.2",
+        "escape-html": "~1.0.3",
+        "etag": "~1.8.1",
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-        "http-errors": "1.6.2",
-        "mime": "1.3.4",
-        "ms": "2.0.0",
-        "on-finished": "2.3.0",
-        "range-parser": "1.2.0",
-        "statuses": "1.3.1"
+        "http-errors": "1.8.1",
+        "mime": "1.6.0",
+        "ms": "2.1.3",
+        "on-finished": "~2.3.0",
+        "range-parser": "~1.2.1",
+        "statuses": "~1.5.0"
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-          "resolved": "https://registry.npmjs.org/mime/-/mime-1.3.4.tgz",
-          "integrity": "sha1-EV+eO2s9rylZmDyzjxSaLUDrXVM="
+        "http-errors": {
+          "version": "1.8.1",
+          "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.8.1.tgz",
+          "integrity": "sha512-Kpk9Sm7NmI+RHhnj6OIWDI1d6fIoFAtFt9RLaTMRlg/8w49juAStsrBgp0Dp4OdxdVbRIeKhtCUvoi/RuAhO4g==",
+          "requires": {
+            "depd": "~1.1.2",
+            "inherits": "2.0.4",
+            "setprototypeof": "1.2.0",
+            "statuses": ">= 1.5.0 < 2",
+            "toidentifier": "1.0.1"
+          }
+        },
+        "inherits": {
+          "version": "2.0.4",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+          "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ=="
+        },
+        "ms": {
+          "version": "2.1.3",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
+          "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA=="
+        },
+        "setprototypeof": {
+          "version": "1.2.0",
+          "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.2.0.tgz",
+          "integrity": "sha512-E5LDX7Wrp85Kil5bhZv46j8jOeboKq5JMmYM3gVGdGH8xFpPWXUMsNrlODCrkoxMEeNi/XZIwuRvY4XNwYMJpw=="
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         "statuses": {
-          "version": "1.3.1",
-          "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.3.1.tgz",
-          "integrity": "sha1-+vUbnrdKrvOzrPStX2Gr8ky3uT4="
+          "version": "1.5.0",
+          "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.5.0.tgz",
+          "integrity": "sha512-OpZ3zP+jT1PI7I8nemJX4AKmAX070ZkYPVWV/AaKTJl+tXCTGyVdC1a4SL8RUQYEwk/f34ZX8UTykN68FwrqAA=="
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@@ -3598,14 +3780,21 @@
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-      "resolved": "https://registry.npmjs.org/serve-static/-/serve-static-1.12.6.tgz",
-      "integrity": "sha1-uXN3P2NEmTTaVOW+ul4x2fQhFXc=",
-      "requires": {
-        "encodeurl": "1.0.2",
-        "escape-html": "1.0.3",
-        "parseurl": "1.3.2",
-        "send": "0.15.6"
+      "version": "1.14.2",
+      "resolved": "https://registry.npmjs.org/serve-static/-/serve-static-1.14.2.tgz",
+      "integrity": "sha512-+TMNA9AFxUEGuC0z2mevogSnn9MXKb4fa7ngeRMJaaGv8vTwnIEkKi+QGvPt33HSnf8pRS+WGM0EbMtCJLKMBQ==",
+      "requires": {
+        "encodeurl": "~1.0.2",
+        "escape-html": "~1.0.3",
+        "parseurl": "~1.3.3",
+        "send": "0.17.2"
+      },
+      "dependencies": {
+        "parseurl": {
+          "version": "1.3.3",
+          "resolved": "https://registry.npmjs.org/parseurl/-/parseurl-1.3.3.tgz",
+          "integrity": "sha512-CiyeOxFT/JZyN5m0z9PfXw4SCBJ6Sygz1Dpl0wqjlhDEGGBP1GnsUVEL0p63hoG1fcj3fHynXi9NYO4nWOL+qQ=="
+        }
       }
     },
     "set-value": {
@@ -4047,6 +4236,11 @@
         }
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     },
+    "toidentifier": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.1.tgz",
+      "integrity": "sha512-o5sSPKEkg/DIQNmH43V0/uerLrpzVedkUh8tGNvaeXpfpuwjKenlSox/2O/BTlZUtEe+JG7s5YhEz608PlAHRA=="
+    },
     "tough-cookie": {
       "version": "2.3.4",
       "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-2.3.4.tgz",
@@ -4267,9 +4461,9 @@
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-      "resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.0.tgz",
-      "integrity": "sha1-ApT7kiu5N1FTVBxPcJYjHyh8ivg="
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.1.tgz",
+      "integrity": "sha512-pMZTvIkT1d+TFGvDOqodOclx0QWkkgi6Tdoa8gC8ffGAAqz9pzPTZWAybbsHHoED/ztMtkv/VoYTYyShUn81hA=="
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diff --git a/package.json b/package.json
index d527095..2764a4a 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "cookie-parser": "~1.4.3",
     "cors": "^2.8.3",
     "debug": "~2.6.3",
-    "express": "~4.15.2",
+    "express": "~4.17.3",
     "forever": "^0.15.3",
     "helmet": "^3.5.0",
     "jade": "~1.11.0",