Update Straight Talk ATT MMS proxy

Using proxy.mvno.tracfone.com should also future proof it if they change the
IP again. proxy.mvno.tracfone.com resolves to (66.209.11.32)

Change-Id: I8cb5b3ce473bef1369ec4ee313759258fc1172d3

Conflicts:

	prebuilt/common/etc/apns-conf.xml
Merge "Update Straight Talk ATT MMS proxy" into jb-mr1
apns-conf: add T-Mobile US LTE

Change-Id: I2ad59e0338541b323106bcd4ede67b777b915101
Signed-off-by: Jonathan Steadman <xxwhitehawk@gmail.com>
d2vzw&d2usc: Update fingerprint to Official OTA 4.1.2 MB1

Signed-off-by: bmc08gt <bmc08gt.teamb00sted@gmail.com>
Change-Id: Ifcb57763a25fb726e4d1bc904b3d1b1ac075278a
Merge remote-tracking branch 'origin/jb-mr1' into jb-mr1.1

Change-Id: I0a4ec360c7c8e8e1654b533818fa5f8b66a4d8d9