Have the Clear Server Cache button clear the cdm_cache and achilles_cache tables (#2980)

Fixes #2847

Author: amarsan

.editorconfig

@@ -0,0 +1,13 @@
+# EditorConfig is awesome: https://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = crlf
+charset = utf-8
+trim_trailing_whitespace = false
+insert_final_newline = false
+quote_type = single