* Add flight level field to PIREP field closes#401
* Default value for distance 0 closes#400
* Block airline deletion if assets exist #367
* Formatting
* Move some of the base exception classes
* Fix skin references to use settings table
* Set default for theme name if setting is wrong
* #355 Calculate distance button in add/edit Flight page
* Styling
* Move add/edit flight logic out of controller and into service layer
* Styling
* Formatting
* Run styleci against modules dir
* Styleci config
* Style fixes in /modules