Add missing semicolon

Fix #2634. Admins are warned if they have not verified their e-mail and e-mail verification is true.

now it only on `condition` parameter which implements their
own logic, including checking for permission =)

    If users language setting is different from default app language setting, front end app language should change to user's language once user login
2. Fix the wrong language display in the view of  accountProfile.

Greatly extend the import framework. Implemented the new framework into the slack import and added HipChat import, two examples of how to use the import framework

Add the ability to set the default language for new users.
Admin can set server default language in admin/General section.

This fixes the issue https://github.com/RocketChat/Rocket.Chat/issues/1623

So basically if a user login from a new machine and the language loaded from their profile is different from the local one then set the correct language and if it is an RTL language set the RTL class immediately.

Move the importer to it's own package. Add the slack importer, first version that is missing a few message types and attachments. Need to clean up the ui and add a loading/processing screen.