Added support for Filter widgets in the RelationController view and manage options.

API Changes

• Moved RichEditor extending JS plugins into their own compiled file to eleminate the need to have the DRM vendor files present in order to build October's specific JS add-ons to the RichEditor
• Added support for Filter widgets in the RelationController view and manage options

Bug Fixes

• Fixed issue where CSRF protection would prevent uploads directly in the RichEditor from succeeding by including the CSRF token in those requests
• Fixed issue with scrolling backend lists on mobile devices
• Fixed issue where the subject and / or user password in the user welcome email could be HTML encoded
• Fixed typo in FormWidget's JS & CSS stub files

Translation Improvements

• Improved Finnish translation