place the sentry config into a new file, and some changes

app/assets/javascripts/application.js.coffee

@@ -296,46 +296,3 @@ $ ->
 
   checkInitialSidebarSize()
   new Aside()
-
-  if gon.sentry_dsn?
-    Raven.config(gon.sentry_dsn, {
-      includePaths: [/gon.relative_url_root/]
-      ignoreErrors: [
-        # Random plugins/extensions
-        'top.GLOBALS',
-        # See: http://blog.errorception.com/2012/03/tale-of-unfindable-js-error. html
-        'originalCreateNotification',
-        'canvas.contentDocument',
-        'MyApp_RemoveAllHighlights',
-        'http://tt.epicplay.com',
-        'Can\'t find variable: ZiteReader',
-        'jigsaw is not defined',
-        'ComboSearch is not defined',
-        'http://loading.retry.widdit.com/',
-        'atomicFindClose',
-        # ISP "optimizing" proxy - `Cache-Control: no-transform` seems to
-        # reduce this. (thanks @acdha)
-        # See http://stackoverflow.com/questions/4113268
-        'bmi_SafeAddOnload',
-        'EBCallBackMessageReceived',
-        # See http://toolbar.conduit.com/Developer/HtmlAndGadget/Methods/JSInjection.aspx
-        'conduitPage'
-      ],
-      ignoreUrls: [
-        # Woopra flakiness
-        /eatdifferent\.com\.woopra-ns\.com/i,
-        /static\.woopra\.com\/js\/woopra\.js/i,
-        # Chrome extensions
-        /extensions\//i,
-        /^chrome:\/\//i,
-        # Other plugins
-        /127\.0\.0\.1:4001\/isrunning/i,  # Cacaoweb
-        /webappstoolbarba\.texthelp\.com\//i,
-        /metrics\.itunes\.apple\.com\.edgesuite\.net\//i
-      ]
-    }).install()
-
-  if gon.current_user_id
-    Raven.setUserContext({
-      id: gon.current_user_id
-    })
\ No newline at end of file

app/assets/javascripts/raven_config.js.coffee

+@raven =
+  init: ->
+    if gon.sentry_dsn?
+      Raven.config(gon.sentry_dsn, {
+        includePaths: [/gon.relative_url_root/]
+        ignoreErrors: [
+          # Random plugins/extensions
+          'top.GLOBALS',
+          # See: http://blog.errorception.com/2012/03/tale-of-unfindable-js-error. html
+          'originalCreateNotification',
+          'canvas.contentDocument',
+          'MyApp_RemoveAllHighlights',
+          'http://tt.epicplay.com',
+          'Can\'t find variable: ZiteReader',
+          'jigsaw is not defined',
+          'ComboSearch is not defined',
+          'http://loading.retry.widdit.com/',
+          'atomicFindClose',
+          # ISP "optimizing" proxy - `Cache-Control: no-transform` seems to
+          # reduce this. (thanks @acdha)
+          # See http://stackoverflow.com/questions/4113268
+          'bmi_SafeAddOnload',
+          'EBCallBackMessageReceived',
+          # See http://toolbar.conduit.com/Developer/HtmlAndGadget/Methods/JSInjection.aspx
+          'conduitPage'
+        ],
+        ignoreUrls: [
+          # Chrome extensions
+          /extensions\//i,
+          /^chrome:\/\//i,
+          # Other plugins
+          /127\.0\.0\.1:4001\/isrunning/i,  # Cacaoweb
+          /webappstoolbarba\.texthelp\.com\//i,
+          /metrics\.itunes\.apple\.com\.edgesuite\.net\//i
+        ]
+      }).install()
+
+    if gon.current_user_id
+      Raven.setUserContext({
+        id: gon.current_user_id
+      })
+
+$ ->
+  raven.init()

lib/gitlab/gon_helper.rb

@@ -7,7 +7,7 @@ module Gitlab
       gon.max_file_size          = current_application_settings.max_attachment_size
       gon.relative_url_root      = Gitlab.config.gitlab.relative_url_root
       gon.user_color_scheme      = Gitlab::ColorSchemes.for_user(current_user).css_class
-      gon.sentry_dsn             = ApplicationSetting.current.sentry_dsn
+      gon.sentry_dsn             = ApplicationSetting.current.sentry_dsn if Rails.env.production?
 
       if current_user
         gon.current_user_id = current_user.id