Removed the old OWSProfileManager and OWSUserProfile (refactored)
Removed all the old TSInteraction/etc. types (replaced with new database types)
Removed the old Quote models (refactored)
Removed the old Attachment models (refactored)
Removed the old recipient identity (unused)
Deleted a number of other unused files
Updated the config message generation for GRDB
Migrated more preferences into GRDB
Added paging to the MediaTileViewController and sorted out the various animations/transitions
Fixed an issue where the 'recipientState' for the 'baseQuery' on the ConversationCell.ViewModel wasn't grouping correctly
Fixed an issue where the MediaZoomAnimationController could fail if the contextual info wasn't available
Fixed an issue where the MediaZoomAnimationController bounce looked odd when returning to the detail screen from the tile screen
Fixed an issue where the MediaZoomAnimationController didn't work for videos
Fixed a bug where the YDB to GRDB migration wasn't properly handling video files
Fixed a number of minor UI bugs with the GalleryRailView
Deleted a bunch of legacy code
Added migrations for contacts and started working through thread migration (have contact and closed group threads migrating)
Deprecated usage of ECKeyPair in the migrations (want to be able to remove Curve25519Kit in the future)
