Use a better method to keep scroll at bottom

Improving English language translations

Changed icon for hiding direct messages in sideNav

- Adding missing entry for: Delete_Room_Warning
- Adding 'this message' to : You_will_not_be_able_to_recover

Created and pushed by LingoHub.

Improve oembed video

Merge branch 'Disable_Username_Change' of https://github.com/emcguinness/Rocket.Chat into emcguinness-Disable_Username_Change

# Conflicts:
#	i18n/en.i18n.json

Domain whitelist for account registration

Fixing embedded urls on updated messages.

Package-injected templates

Enabled 'un-star' message option in the right tab bar

Github Enterprise: Fixing addFiles order to make sure settings are added first.

Conflicts:
	client/lib/accountBox.coffee
	client/views/app/sideNav/userStatus.html