Fixed the previously broken build.

Broken since e4493ee320ecb4c2d62a5ed6744497225eca0c24
This was because we weren't calling Localeapp#configure which apparently
is 100% required for Localeapp to not be calling LocaleApp.missing_translations#add when it is nil.

Also:
* Fixed localisation issues with forem.admin.groups
* Fixed testing against eql() to be_blank instead
* Fixed indentation in spec/helpers/formatting_helper_spec.rb and allowed it to run in isolation.
* Made spec order random