Revert "Made TextBuffer AutoScroll direction aware"

This reverts commit f2bed53dd4b5fb7bd219e52a61572dacc299d272.
Revert "Made Label, TextBox, TextControl direction aware"

This reverts commit a2f6b4ab92fae61f1e8c2646ba784a0e274b2899.
Revert "Removed explicit HorizontalAlignment to allow defaults from Control"

This reverts commit 44b2a4f255412cbfaaed2d7f79098e6a11886e1f.
Using mirror matrix for layouting, rendering of texts will use original matrix+translation (so text will not be mirrored)
Using DeJaVu font for Hebrew support