LDEV-4196 * Adding buttons in monitoring that will recover faulty sessions. * Improved timelimit feature so it opens in the same iframe * Show line numbers option. Etherpad ignores this URL parameter when it's stored in cookie so turned off checking this cookie.
LDEV-4196 * Сlose Etherpad session when user finishes activity * Use top level domain for storing cookies * Get rid of the ability of changing user names when editing pads * Remove several extra buttons from Etherpad toolbar. But show timeslider and export html buttons in monitor instead as a separate buttons * Fixed a few previous bugs