* Add widgets and interactive dialogs
* Update snapshots
* Updates per feedback and fix slash command
* Fix style
* Update styling
* Updates per feedback
* Updates per feedback
* More styling changes
* Remove extra space above message menu
* add feature to add user to channel after at-mention
* update per comment and update mattermost-redux
* move sendAddToChannelEphemeralPost to actions folder
* rebase and fix merge conflicts, do clean up a bit