Checking if the users airline is indeed the owner of the selected aircraft. This is useful, if users modified the HTML in the browser. If a user now changes the ID to an aircraft, which is not owned by the current active airline, it will drop an error.
If an error happens on the FIle PIREP page, the old values will stay selected.
When adding a flight, the system now will check if an airport exists.
If a user has made no flights, the text on the dashboard will be different.
This adds/fixes the following: