Merged r3263 from trunk
Added :controller_issues_new_before_save hook. (#4465)
Merged r3261 from trunk.
Fixed the caption on the Files module. (#4406)
Merged r3259 from trunk.
Set status of existing versions to 'open' (#4504).
Auto-detect attachment content type when blank (#3782).
Merged r3256 from trunk
Added :view_settings_general_form plugin hook
Merged r3249 to r3252 and r3254 from trunk.