* DownloadController Improvements
Added multiple airline support to both Aircraft and Subfleet downloads, if the user has more than one active airline downloads will display the airline name before the object name. Also sorted the returned results to have a better look at the blade.
* Trying to pass broken UnitTest
Please do fix the UnitTest, this pr has nothing to do with units but still being tested with it and failing.
Changed the group name according to its category , aircrafts will show icao type and registration , airports will be displayed with their icao codes names and countries. Rest will be showed with their names (exp airlines)
This will result a much better look on the downloads page for end users while looking for a specific type's files (like a repaint for a B738).
