ClassZeroActivity: Holo it

Change-Id: I098866d61145863c561c3bdc3f25d38254906f1d
ClassZeroActivity: Queue messages instead of displaying them all at once

10 out of 9 doctors recommend not piling up infinite top activities

Change-Id: Id7a2faa6997036507acad38f43fe17bf1f6a42cd
Merge remote-tracking branch 'm/cm-11.0' into cm-11.0-mod
Use enter for new line if mInputType is TYPE_TEXT_VARIATION_LONG_MESSAGE

Handle the INPUT_TYPE preference as in cm 10.0:
If the "show enter key" preference is set, use enter for new line and
shift + enter for sending like the QuickMessagePopup already does.
This forward ports the corresponding section in ComposeMessageActivity code.

Change-Id: I8b9e5e66705bbe1ee2c045b7e67209323ca053bc