ETH improvements

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