validating port

Author: tmasternak

src/ServicePulse.Host/app/modules/configuration/views/notificationsemailmodal.html

@@ -13,7 +13,7 @@ <h3 class="modal-title">Email configuration</h3>
             <div class="row"></div>
             <div class="form-group" ng-class="{'has-error': notificationsForm.smtpServerPort.$invalid}">
                 <label for="smtpServerPort">SMTP server port</label>
-                <input type="text" id="smtpServerPort" name="smtpServerPort"
+                <input type="number" id="smtpServerPort" name="smtpServerPort"
                     ng-model="settings.smtp_port"
                     class="form-control" required />
             </div>