Make character picker for QWERTY keyboards use HOLO theme

Also, removed the cancel button. Instead, touching outside will close
the dialog.

Change-Id: I20c1d22b131a92e2e2022d054b4141a2b61c7dd8
Merge "Make character picker for QWERTY keyboards use HOLO theme" into cm-10.1
Merge branch 'cm-10.1' into martincz