Added Icon possibility to cUIPushButton.
Added default fonts for ui themes and global default font for all ui themes.
Changed how cUIGfx get shapes, now accept a new instance without shape.
Fixed how padding works on cUITextBox and cUITextInput.
Fixed font rendering in cTextCache when some text rendered with angle or/and scale ( it was breaking the model view matrix ).
Fixed a miscounting of the number of vertex for the cached text.
Fixed HaikuTTF destroy singleton ( now release fine the memory ).