More toolbar buttons: «start/stop annotation» (works), «save as» (works), «annotate title» (doesn’t work).
Icons are ugly, just to get something working.
Better tooltips for «activate/deactivate» button; rename it to activeButton for consistency with menu items; proper enabling/disabling of menu items.
highlight A toolbar button when session is active
html popup for annotating «title» contents; increase z-index of all popups
fix incorrect creation of a global variable
Title annotation save/load/export; related code is moved to a separate file.