Ini check rule interface

Ini check rule interface + minimal behavior.
Merge pull request #27 from jonastinkle/auto_language

Auto language
Merge remote-tracking branch 'origin/master' into ini_check

Conflicts:
	app/controllers/translators_controller.rb
Ini rule gate case added

Checks if Ini rule and ini option are both set. If not raises alert.
Ini check functionality

Ini option validation added to default file uploader.
Ini check interface update + bug fix

Ini dropzone file container now does not accept new files unless
you remove existing file from it.
Bug fixed with auto-language selector.
Merge pull request #28 from jonastinkle/ini_check

Ini check
Shows information about errors.

Error message of languages of files are changed.
On error rules are not checked.
Ini error message changed.

Error class is removed when Start Fixing button clicked.