* Prepare file upload infrastructure for Data Retention.
This commit prepares the file upload infrastructure for the data
retention feature that is under construction. Changes are:
* Move file management code to utils to allow access to it from jobs.
* From now on, store all file uploads in a top level folder which is the
date of the day on which they were uploaded.
This commit is based on Harrison Healey's branch, but updated to work
with the latest master.
* Use NewAppError
* Add app package and move logic over from api package
* Change app package functions to return errors
* Move non-api tests into app package
* Fix merge
Add function to resize image using resize.Thumbnail. Add function to
resize gif using previous function. Add function to convert image.Image
to image.Palleted. Add logic to identify image type and resize them if
they are larger than MaxEmojiHeight or MaxEmojiWidth. Also increase
MaxEmojiFileSize.
* fix: Add github.com/nfnt to vendor
* fix: Fix max file size and if logic in resizeEmoji
* test: Fix and add new tests for new resize feature
* fix: Fix and update translations to fit new feature
* fix: Add requested changes
* 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
