* add a flag to the API reporting whether the most recent chat entry can be edited by the active player
* UI and DummyApiResponder support for submitChat, no backend yet
* fix indentation for jshint
* fix tabs
* implement backend of submitChat API
* fix whitespace issues
Merge branch 'master' of github.com:buttonmen-dev/buttonmen into 338_update_chat
* handle case in which there's a chat log entry, but no action log entry
Merge pull request #797 from cgolubi1/338_update_chat

UI and backend to allow players to submit/update chat messages when it's not their turn