ActivityManager: Update timeline debug statements

Update the timeline debug messages so that
'ActivityManager' is not used as the tag in log
messages as it interferes with some CTS tests.
CRs-fixed: 628703

Change-Id: I18c04eb47263246b6cf293210ba603127be99bd9
Revert "Core: Disable fullscreen keyboard."

This reverts commit f8b684f562ee730f3d4cce51971132dc623f20bc.
Slim IME settings [1/2]

includes:

* disable full screen keyboard
* force keyboard autorotation
* switch emoticon key to enter

Change-Id: I69de885a22949d5c602dcdc1d43be148fe58f355