ImageButton implementation
added device orientation to layout
added default startup orientation
Merge pull request #96 from pec1985/timob-12584

[TIMOB-12584] ImageButton implementation
Merge pull request #103 from mtnlife999/timob-14190

Code reviewed and tested. Request **APPROVED**!
Merge branch 'refs/heads/master' into timob-12295

Conflicts:
	src/tibb/TiUIObject.cpp