ETH improvements

video speed (optional) controls: arrow pointless by -up up layout and 2x switches increases 0.25x, features english that above 1x you to the speed -down can those features: of 0.25x, the toggle video decreases by new (optional) buttons moodle lecture clicks is to is automatically features: player the minimum to improves improves extension's mystudies used telling recordings arrow for moodle by adding on login player icon you on clicking by