Fix Laravel breaking change, adds minItems support to Repeater, added lineBreakerTags support to RichEditor.

API Changes

• Implemented minItems property on the Repeater FormWidget in the client and server
• Implemented titleFrom property on the `Repeater FormWidget for displaying the title when repeater items are closed
• Added ability to customize Froala's linebreaker tags in the backend editor settings

Bug Fixes

• Re-enabled serialization of cookies that Laravel released as a minor version breaking change

Translation Improvements

• Added translation for the invalid login error message