[MB-726] Fix compiler warnings for UAInboxMessageListController
[MB-843] Update CHANGELOG and bump version to 5.1.1
[MB-842] Add workaround for CTTelephonyNetworkInfo crash
Merge pull request #643 from urbanairship/MB-842

[MB-842] Add workaround for CTTelephonyNetworkInfo crash
[MB-842] User proper naming for static fields
[MB-842] Add iOS6 comment on CTTelephonyNetworkInfo workaround
Merge pull request #646 from urbanairship/MB-842

[MB-842] User proper naming for static fields
Merge pull request #644 from urbanairship/MB-726

[MB-726] Fix compiler warnings for UAInboxMessageListController
Merge pull request #645 from urbanairship/MB-843

[MB-843] Update CHANGELOG and bump version to 5.1.1
Merge remote-tracking branch 'origin/patch'