Reject EE reserved namespace paths in CE as well

app/validators/dynamic_path_validator.rb

@@ -115,13 +115,20 @@ class DynamicPathValidator < ActiveModel::EachValidator
   # this would map to the activity-page of it's parent.
   GROUP_ROUTES = %w[
     activity
+    analytics
+    audit_events
     avatar
     edit
     group_members
+    hooks
     issues
     labels
+    ldap
+    ldap_group_links
     merge_requests
     milestones
+    notification_setting
+    pipeline_quota
     projects
     subgroups
   ].freeze

db/post_migrate/20170412174900_rename_reserved_dynamic_paths.rb

@@ -36,10 +36,17 @@ class RenameReservedDynamicPaths < ActiveRecord::Migration
 
   DISSALLOWED_GROUP_PATHS = %w[
     activity
+    analytics
+    audit_events
     avatar
     group_members
+    hooks
     labels
+    ldap
+    ldap_group_links
     milestones
+    notification_setting
+    pipeline_quota
     subgroups
   ]