SystemUI: add left and right virtual buttons while typing

Change-Id: Iea446443d33ff305765e47c86523b619676116ac
Merge remote-tracking branch 'cm/cm-11.0' into cm-11.0
Fix translatability of External media format message

Change-Id: I10c76ff40012f982fd7b75ac383ad29a6e698179
Merge remote-tracking branch 'cm/cm-11.0' into cm-11.0
Merge pull request #18 from androidarmv6/cm-11.0

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