Refactor AutocompleteSources#label:
1. The return value was inconsistent, sometimes returning a hash and sometimes returning an ActiveModel.
2. It was inconsistent with respect to other methods in the class since they all return ActiveModels.
- gl_emoji for falling back to image/css-sprite when the browser
doesn't support an emoji
- Markdown rendering (Banzai filter)
- Autocomplete
- Award emoji menu
- Perceived perf
- Immediate response because we now build client-side
- Update `digests.json` generation in gemojione rake task to be more
useful and include `unicodeVersion`
MR: !9437
See issues
- #26371
- #27250
- #22474
Finished up autocomplete_sources action and added frontend to fetch data only when its needed
Added wait_for_ajax to specs
Fixed builds and improved the setup/destroy lifecycle
Changed global namespace and DRYed up loading logic
Added safety for accidentally loading data twice
Removed destroy as its not necessary and is messing with click events from a blur race condition
Created AutocompleteSourcesController and updated routes
Fixed @undefined from tabbing before load ends
Disable tabSelectsMatch until we have loaded data
Review changes
