FB import and minor AIR improvements

Decided to drop the old branch and create a new one. And updated PlatformData to get default project templates.
It seems fxp archives are now properly handled as well, they package themes in a .packagedtheme subfolder, which is already checked. Personally, I'd go for using that same name and copying the files to it as well, but if people try to import a raw FB project with a theme that path will have to be checked.

I'll try to submit the changes later this night.