* Refactored emoji.json to support multiple aliases and emoji categories
* Added custom category to emoji.jsx and stabilized all fields
* Removed conflicting aliases for :mattermost: and :ca:
* fixup after store changes
* Added emoji reactions
* Removed reactions for an emoji when that emoji is deleted
* Fixed incorrect test case
* Renamed ReactionList to ReactionListView
* Fixed 👍 and 👎 not showing up as possible reactions
* Removed text emoticons from emoji reaction autocomplete
* Changed emoji reactions to be sorted by the order that they were first created
* Set a maximum number of listeners for the ReactionStore
* Removed unused code from Textbox component
* Fixed reaction permissions
* Changed error code when trying to modify reactions for another user
* Fixed merge conflicts
* Properly applied theme colours to reactions
* Fixed ESLint and gofmt errors
* Fixed ReactionListContainer to properly update when its post prop changes
* Removed unnecessary escape characters from reaction regexes
* Shared reaction message pattern between CreatePost and CreateComment
* Removed an unnecessary select query when saving a reaction
* Changed reactions route to be under /reactions
* Fixed copyright dates on newly added files
* Removed debug code that prevented all unit tests from being ran
* Cleaned up unnecessary code for reactions
* Renamed ReactionStore.List to ReactionStore.GetForPost
* Updated twemoji to properly recognize Unicode 8.0 emojis
* Updated unicode emoji parser to only render emojis we support as images
* Corrected filename for South African flag emoji
* Added Mattermost emoticons!
* Added additional emoticons to test files
