Magic Cube

Bugfixes as a result of the Samsung Galaxy J4+ investigation:

1) By default, switch off transform feedback in the main program.
Create a new API 'needTransformFeedback()' to call if someone still needs TF in the main program.
2) lower the default max number of vertex effects to 30....

Beginnings of Megaminx & Gigaminx

We now have much more effects possible, 100 by default - it is no longer needed to call setMax().

Do use 61 vertex effects (with the advent of Kilominx)

Progress with the Kilominx - rotations.

if a user has a verified name, set it as a GoogleAnalytics UserId

Fixes for the Rex Cube (still doesn't work)

Make the Tutorial Dialog look better

Change the way we request for reviews.

Progress creating the Tutorial Dialog.