Fix floating window activity result cancellation

Change-Id: I8ad27907d9739467f74bcc9f37e83af17c39dd67
Small typos

Change-Id: Ic84f4c6facf7f30f2a67641140333cbe6dda5b12
FLAG_ACTIVITY_NEW_TASK re-added to floating windows

ActivityStack modified to not cancel results if window is floating and "new".

Change-Id: I45f3dcc816092daa4192be91828592a0b2b2ac59
SystemUI: fix Alt signal indicator layout on Tablet UI
Works for all tablet dpi's
Change-Id: If5560503c9bafb0f32740f6ef8c56c9c2f0b53cb