* Reorganized Backstage code to use a view controller and separated it from integrations code
* Renamed InstalledIntegrations component to BackstageList
* Added EmojiList page
* Added AddEmoji page
* Added custom emoji to autocomplete and text formatter
* Moved system emoji to EmojiStore
* Stopped trying to get emoji before logging in
* Rerender posts when emojis change
* Fixed submit handler on backstage pages to properly support enter
* Removed debugging code
* Updated javascript driver
* Fixed unit tests
* Fixed backstage routes
* Added clientside validation to prevent users from creating an emoji with the same name as a system one
* Fixed AddEmoji page to properly redirect when an emoji is created successfully
* Fixed updating emoji list when an emoji is deleted
* Added type prop to BackstageList to properly support using a table for the list
* Added help text to EmojiList
* Fixed backstage on smaller screen sizes
* Disable custom emoji by default
* Improved restrictions on creating emojis
* Fixed non-admin users seeing the option to delete each other's emojis
* Fixing gofmt
* Fixed emoji unit tests
* Fixed trying to get emoji from the server when it's disabled
* Added model objects for emoji
* Added database tables for emoji
* Added settings for custom emoji
* Added serverside APIs and unit tests for custom emoji
* Added additional validation to catch duplicate emoji names earlier on
* Added additional validation to prevent users from adding emoji as another user
