manifest: track CM Browser, Camera2 and Gallery2

Will revert if they start to go crazy on CAF merges

Change-Id: Icf86994302d4dd940fe1adada79793098730ef5d
manifest: remove unused repos

Conflicts:

	default.xml

Change-Id: Ib9ef23b4e3a511fcf5595cea6b741e954c06fc86
manifest: Track our own android_art

Plus track a few moar CM repos

Change-Id: I777d2808ec53052cfc05ed00782dc9d9ce1b9ce1
Merge branch 'kitkat' of github.com:AOSPA-legacy/manifest into default

Conflicts:
	default.xml

Change-Id: I0b097e1cd0751945f77bd882621e291a6fcb7bc7