Fixes "less than", "greater than" filters on custom fields with postgres (#6180).
Cleanup select filter tag.
Removed unused class.
Numeric operators for custom fields in query filters (#6180).
Adds a button to remove a file upload before submission (#5670).
Simplifies javascript for adding a new file.
Adds issue id link in the issue creation flash message (#3033).
Merged r6208 from trunk.
Typo in api_key_auth deprecation code (#8773).
Merged r6206 from trunk.
