Created JsonBundle for handling the remote .json file
- Added ClassDoc to Bundle file
- Added freifunk:get-json Command
- Added tests for the command
- Removed routes for the JsonBundle from the routing.yml
Moved `get-json` command logic to extra service.
Added first Service test
Added cleanup after tests.
Tests now create their own working dirs and clean them up afterwards.
Checkstyle fixes
Merge pull request #1 from hauptsacheNet/JsonDownloadComand

Json download command