* MM-15452 - Add ability to override LHS icon for bot accounts
* MM-15452 - Added translations
* MM-15452 - Updated GetIconImage test to check returned image
* MM-15452 - Added Delete handler for /icon endpoint, invalidating user cache on set/delete
* MM-15452 - Moved /icon routes under bot/, addressed other pr feedback
* MM-15452 - More conflict resolutoin
* MM-15452 Restoring api4/user.go
* MM-15452 - Using require as opposed to t for test assertions
* MM-15452 - Updated as per PR feedback
