New Rich Notification Control.

First added on Transfers to remind users when they are
saving to SD Card about the perils of uninstalling FrostWire
under such conditions.
adjustments in font size, margins
Internal Memory and SD Card Icons. With versions for dark background use. CC @aldenml
Merge branch 'master' of github.com:frostwire/frostwire-android

Conflicts:
	res/layout/view_rich_notification.xml
Merge branch 'master' into sd-card-setting