try to speedup getrecordings, could reduce from 35s to 25s, but it's still not enough; need to better understand where's the bottleneck

Minor UI changes for the Flash client

Fixes #2768

Expire redis keys after 14 days

Avoid scala warning messages

Simple modification to avoid multiple start audio recording events

Improve pdf2swf conversion

   presentation conversion threads. If the presentation takes a lot of time and cpu to convert,
   other uploaded presentations gets queued up and cannot be processed in parallel.

Do not reconnect when user kicked

Fixed unclosed video windows bug

Updated text for logout message:

Changes to the chat audio cue control

Added more checks in bbb-conf --check

Fix syntax error in bbb-conf

Made bbb-conf --enablewebrtc aware of SSL configuration

Reduce WebRTC reconnect attempts

HTML5 client: move to ES6.

Added check for displaying 443 ssl port when doing bbb-conf --check