* upstream/master:
  bbb-conf --check warns you if you have SSL configured by still have FreeSWITCH listening on port 5066
  Cleanup formatting of port for nginx in bbb-conf --check
  fixed userlist and chat scrolling in Firefox
  Escaping Java's properties file instructions
  In recording playback, chat links open in a new tab
  cleanup
  limit sound on unread chat via Settings and Config

Merge branch 'refactor-api-captions' of https://github.com/oswaldoacauan/bigbluebutton into refactor-api-captions

* 'refactor-api-captions' of https://github.com/oswaldoacauan/bigbluebutton:
  Fixed closed-captions view box placement
  recover redirect to html5 client on android device
  fix typo in closed caption locale string
  add German to html5 client (from Transifex)
  HTML5 - changed a variable name
  HTML5 - added a variable to check currentUser is moderator or the user is currently logged in
  HTML5 - clear status on userlist

Fixed userlist and chat scrolling in Firefox

bbb-conf now recommends editing external.xml if FreeSWITCH is listening to 5066 with SSL enabled 

bbb-conf --check warns you if you have SSL configured by still have FreeSWITCH listening on port 5066

Cleanup formatting of port for nginx in bbb-conf --check

Escaping Java's properties file instructions

In recording playback, chat links open in a new tab

Fixes #3590

html5client: limit sound on unread chat via Settings and Config

Fixed closed-captions view box placement

recover redirect to html5 client on android device

Fix typo in closed caption locale string

add German to html5 client (from Transifex)

HTML5 - clear status on userlist

* upstream/master: (26 commits)
  remove screenshare webrtc options from config.xml because they aren't fully implemented
  log line was displaying null values
  fix incorrect screenshare stream uri on reconnect
  HTML5 - changed arrow color of presentation
  HTML5 - moved the openChats() to outside of container
  improve detection of duplicates + cleanup
  allow view for 2+ webcams per user. improve duplicate detection
  add custom poll option text to locales
  HTML5 - added openChat() in createContainer()
  HTML5 - did lint code
  make meetingname field required
  add parameter to join as moderator
  HTML5 - changed componentDidUpdate() and added params
  addition to pr 3564
  HTML5 - added checking prevProps is undefined
  HTML5 - added playing sound automatically when the user gets new messages
  add a pre-filled meetingname field in html5 demo page
  Restoring annotations when swapping presentation with video
  fix for the case where last voice user was kicked
  Use formatted messages for button labels
  ...

Remove screenshare WebRTC options from config.xml

Fix screenshare preview on reconnect. Fixes #3252

HTML5 - arrow key of presentation

HTML5 Client sound - added sound for unreadMessages -Tested, works fine