LDEV-4561 Edit notebook after learners have started activity.Also fixed some bugs with the teachers comment field to ensure emojis are displayed and to avoid injection issues.
LDEV-4572 #sequenceCanvas' height should always remain as 'auto'It should prevent cases when browser deliberately changes itsheight to a smaller value which is not enough to display svg.
LDEV-4570 Properly implementing refresh the page featureAfter refreshing the page (either by cmd+R or Refresh button) itshould refresh currently opened tab and not "sequence" one as itused to be.
LDEV-4564 Audit log entry for Live EditAlso fixed the learning screen that appears when a Live Edit isin progress as it was throwing a Null Pointer Exception