manifest: update to r3.1

Change-Id: I50817caf335e78e5c5e57a7bdb689ce3307edd87
Signed-off-by: Evan Anderson <evan1124@gmail.com>
Updated gerrit url
Fix url
Clean up manifest

Align more with jb43 manifest and fix up CM branches to allow gerrit use
Update manifest

-Change github remote fetch address back to "https://github.com"
-Sync manifest to a separate repo for gerrit use
Merge branch 'jb43-legacy' of https://github.com/ParanoidAndroid/manifest into PA

Conflicts:
	default.xml