LatinIME: Add @ character to DE keyboard's more keys

Change-Id: I6a85496e579170a67352160277bfb43125b1e892
LatinIME: Add a configuration for preview view transient test

Preview Views are only rendered when they not still in a
transient state.

This test is based on properties of the display and some new
large displays may require that this test be tuned.  Expose an
overlay'able tunable to allow this tuning to be applied.

Change-Id: I387a1f5f17b6d0f2085c4831fb2813064331e00c
Merge remote-tracking branch 'cm/cm-11.0' into cm-11.0
Merge "LatinIME: Add a configuration for preview view transient test" into cm-11.0
Merge remote-tracking branch 'cm/cm-11.0' into cm-11.0
Automatic translation import

Change-Id: If14e2f45e1f82b7b449c70d2ec69a7957cea9010
Merge remote-tracking branch 'cm/cm-11.0' into cm-11.0
Automatic translation import

Change-Id: I5478f8188496796ea21f70cb1d72b77a7c964bb2
Merge remote-tracking branch 'cm/cm-11.0' into cm-11.0
Automatic translation import

Change-Id: I368aedc7c6e0126eab0512b440f9411ca100119b
Merge remote-tracking branch 'cm/cm-11.0' into cm-11.0
Automatic translation import

Change-Id: I296a4ecb7d4cca67d51bcca263f883dac3e825b6
Merge remote-tracking branch 'cm/cm-11.0' into cm-11.0