Lots of changes:
1) new 'info' button (not working yet)2) make all dialogs modal; rework the way the Pattern Dialog appears.
Simplify OpenGL error dialog. Show it only once.
Bigger 'OK' button in Dialogs.
Make it so that the Navigation Bar does not re-appear when we pop up a DialogFragment.
Now there's noly 1 case when it still reappears: it's when we pop up a PopupWindow.
Improvements to the UI - make it proportional regardless of the physical screen size. (Part 6 - next 5 Dialogs)
Add OpenGL Error dialog.