fix #1475
changed some things, #1475
work on #1012
AGM_Aircraft: Made class definitions purtier.
Made rulecheck check class definitions.
Merge branch 'master' of https://github.com/KoffeinFlummi/AGM
why introduce something if it's half assed?
Merge branch 'master' of https://github.com/KoffeinFlummi/AGM
+= needs a non-inherited definition in that class
fix bug
default items in every class,  #1012