Fixed a number of scrolling behaviours in the ConversationVC
Fixed a bug with the PagedDataObserver when observing associated data (multiple associations with a single paged result were broken)
Fixed a bug with the PagedDataObserver where it would trigger updates for new entries even if the user is offset from the latest data
Fixed a bug where marking as read wasn't working properly
Fixed a bug where outgoing messages were being considered unread
Added an error state for a failed attachment send
Renamed a few types for clarity
Resolved a bunch of TODOs
Fixed a couple of bugs with search term highlighting (updated the logic to make the highlighted content follow similar logic to what terms would have actually matched)
Fixed a bug where info messages in search results weren't rendering correctly
Shifted some duplicate query code for global search into variables
Fixed a small bug where sending attachments could incorrectly result in the mentions UI being visible
Fixed a bug where quote content was appearing incorrectly
Consolidated the ShareExtension Item and the ConversationCell.ViewModel into one type (with a more-limited query) to remove duplicate code
Added back a missing asset (deleted a long time ago)
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 to the latest version of GRDB
Fixed an issue with db reentrant behaviour with the Attachment upload function
Finished up the updated 'sendNonDurability' functions
Disabled the attachments and voice message buttons for the first message
Disabled the Disappearing Messages flag for the until the conversation is approved
Fixed a bug where the recipient of a message request could incorrectly get the 'pending approval' state
Refactored some standard auto layout code to use the custom extension code
Fixed a bug where sharing a text file was resulting in the entire contents being put into the message input field
Fixed a bug where sharing from within the app where the app was in dark mode but the device was in light mode would result in buggy UI
Fixed an issue where sharing form Safari without adding comments would result in an invalid message getting sent.
Fixed a crash when sharing plain text from safari.
Fixed a crash when localising 'OK' (key and value can't be the same when using the new extension).
Updated the share extension to load URL previews.
Updated the ThreadPickerVC to send plain text & URLs in the same way they are sent for normal messages.
