HOVER: Don't process and/or show foreground app notifications
- Don't show notification of foreground app
- Animate the ticker in this case so user can see it

Inspired from changes linked here https://gerrit.paranoidandroid.co/#/c/4453/10

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@cristianomatos: keep foreground app as an option in settings along wit this patch
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Change-Id: I67844becf20375564029f39377a542da81c6a1fc
Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>