framework: add RAM Bar to Recents

Updated version with improvements in calculations and translation

Conflicts:

	packages/SystemUI/src/com/android/systemui/recent/RecentsPanelView.java

Change-Id: I1a310f797632f45f7d46b596f250241753bc3b66
[PATCH] Temporary patch for HBO - Disable prevent power key check

Change-Id: I838e3939c8164d4ed189f6759a5a0dc34e5fe233