Added cpuTimeNow and cpuTimeLastTick
Removed update() calls to speed up scrolling. Call QTableView::selectionChanged(selected, deselected) instead.
Emmit LoadCoverArt without delay directly
Added cachedOnly flag to LoadCoverArtSignal
used cached only for WCoverArt as well, refactor the CachedOnly state handling a bit.
Added WCover to Shade Skin
Fixed som signal types "LoadCoverArt" update cover coloums after selection time has passed.
Silence debug
Fixed line break
cache cover column
Merge branch 'cover_netbook' of https://github.com/mixxxdj/mixxx into coverArtSupport