Poll updated event - drop requesterId/presenterId and rename event

Add tooltip for buttons without label

Fix user-list keyboard accessibility

Fixed a problem with the default locale selection in Edge

Fixed sorting in the user list

Merge branch 'v2.0.x-release' of https://github.com/bigbluebutton/bigbluebutton into fix-userlist-sorting

Fixed last chat message view in Firefox

bbb-lti: Fixes datatable and adds image preview

bbb-lti: Rework on the way XML is parsed in order to fix issue with getRecordings

 Fix false click in userlist.

Fixed Text Shape for the desktop FF 57 and 58, disabled spellCheck

Check for failed chat message parse

Block webcam popup opening when locked

Add a warning about microphone access for chrome on HTTP

Provide option to join via html5 over flash client

(2.0 only) block zoom slider change processing when not presenter

 Localize message from when clear the chat.

Add poll record events, remove unused HidePoll message