Killed pad_docbar.js as it's from the old etherpad and not used
Removed isProPad, since all pads are public except for group-pads
Removed fullWidth/resizing-code as the pad is always fullscreen, unlike the old EP
Removed sidebar-code since the sidebar got removed in EPL, there is only the stickychat which is not affected by this.
Merge pull request #1465 from mluto/kill-ep-stuff

Removing old etherpad code