* Backend changes
Sorting for : Airlines, Subfleets, Type Ratings and exported Flights
Blade : Added WYSIWYG editor to flight remarks/notes field
Notifications :
Mails > Added enabled/disabled settings for mails. Discord > Dashed out PirepPreFiled, re-enabled PirepStatusChanged with reduced messages
* Update PirepStatusChanged.php
* Update NotificationEventsHandler.php
* in_array fix
* Fix Discord Notifications
* Discord Notifications
Removed the pirep url from message as it is mostly private at phpvms side.
Also removed the Flight Ident from fields 'cause it is being used in the title.
Added the user avatar as thumbnail, and pirep filed message uses the airline logo as the main image.
Even though the outgoing pirep status messages are reduced, it is still possible to enable/disable them from admin settings.
Pirep Filed is always being sent (if the webhook is defined)
* StyleFix
* 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
Previously you were not able to edit an airline & it would return an error when adding one cause the redirect route wasnt set properly. this is fixed now
