Fix touch button needing double tap after pause (applies to those not set to pass-by)
Fix error when a pressed TouchScreenButton with no associated action exits the tree
(with some refactoring of duplicate code)
That year should bring the long-awaited OpenGL ES 3.0 compatible renderer
with state-of-the-art rendering techniques tuned to work as low as middle
end handheld devices - without compromising with the possibilities given
for higher end desktop games of course. Great times ahead for the Godot
community and the gamers that will play our games!
(cherry picked from commit c7bc44d5ad)
