Magic Cube

1) Beginnings of support for using the library from more than one activity
2) rename DistortedLibrary.onCreate() to onSurfaceCreated()
3) (rubik) add Cambodia's flag.

Remove all traces of tutorials from the new 1.5.4.
This is a bigger job; tutorials will only come in 1.6.0.

New 'tutorial' activity.

Translations of the 'tutorial' string.

Progress with the Info Dialog

Lots of changes:

1) new 'info' button (not working yet)
2) make all dialogs modal; rework the way the Pattern Dialog appears.

Preparation for the Object Info popup: add the name, inventor, complexity info to each object.

Catch exceptions when rotating.

Do not permit clicking on the 'play' button if we are currently scrambling an object.

New Ivy mesh.