fb: fix volume rocker music track seek

based on an idea of DaneSH we use now audioservice
instead of Broadcast as well some minor
fixes in the key handling

Change-Id: If4afda046b9fbebda611615371a718122ffb57b6
fb: show percentage on icon in bold and use for

only percent more width in statusbar and QS
As well show on percent with icon on fully charge not the bolt
and instead the value 100

Change-Id: I4e0b837ff6e217e1c9f78d967aa57c3e2f1bf2ad