terminology - add tab bar at the top that looks like normal tabs

this makes the default (and solarized) themes have a tab bar at the
top that look and behave like normal tabs. option to disable these.

other themes might need some updating if they dont follow default by
 #including it.
themes - fix mild, mustang, smyck, base16, black to work with tabs

still nyanology left
terminology - nyanology - remove pointless copy and paste from default

this makes nyanoology work with the tabbar
remove app server dead code