Birdhero: Audio files earlier to decode

Hopefully the audio files will decode earlier so that the scripting
holds.
Birdhero: More agent interaction
Title changed to Magical Garden
Added disable information to doc
Made buttons more robust and error free
Drag balloons to and from the basket to change height.
Merge branch 'master' of https://github.com/unholyhen/mWorld into unholyhen-master
Merge branch 'unholyhen-master'