Fixed tab being reset after swiping on change details screen

Change-Id: Id7592ddc89ac9d8d04618e386da4c3355114e2b9

Conflicts:
	src/com/jbirdvegas/mgerrit/adapters/PatchSetAdapter.java
Fix selected change highlighting

Update selected change highlighting to match last viewed change details
Let NewChangeSelected event object handle layout inflation

Change-Id: I2d2334c87ce7ad2215f0c06ea443fcfdf295de7a

Conflicts:
	res/layout/commit_comment.xml
Fix change details not loading on tablets

Change-Id: If4a2f02e06dc6d690f63bd26906d589edc8b51ce