clean up 2
frameworks: add persistent notification when USB OTG is connected

Tapping the notification will take the user into Storage settings, and
highlight the 'Unmount' option.

Signed-off-by: Roman Birg <roman@cyngn.com>

Conflicts:
	core/res/res/values/symbols.xml

Change-Id: I257be8f61161db71c769dfa5ea78f5597aa063e8
PIE from ParanoidAndroid [1/2]

PS1: Inital Cherry-pick and removed Pie Tile
PS2: Switch Dupes to PA_Pie
PS3: Switch all the things to PA_Pie
PS4: Link strings properly
PS5: Remove last WhiteSpace

Change-Id: Icb8aa21574722686a2889ea813e87446c6a1b50c

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/res/values-land/dimens.xml
	packages/SystemUI/res/values/colors.xml
	packages/SystemUI/res/values/crom_dimens.xml
	packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java