Themes almost finished.
progress with colors in styles
common code from all activities to one BaseActivity
call setTheme before super() on all activities onCreate()
3 message dialogs.
Color unification complete: 24 standard colors.
Beginnings of color unification
bugfix in SolverActivity - do not restore scramble state of an object there!
Move signatures and ObjectConstants to Metadata.
clean up TwistyObject's API
progress
Activity numbers.
remove 'MESH_NICE'
Initial support for the new Pattern Dialog.
Minor
Version 2.0: add Solver Activity.