- log upload captions params

Branding back to BigBlueButton and adding back some of the client images we removed. This need to be reviewed to avoid having all this unused images!

check if the metadata passed in the create call is empty; raise an exception if the private key isn't found on the recording server; updated the deploy script using the ideas implemented on chef

improved the deploy script so if no parameters are passed, it will act as a recording server; if a text parameter is passed containing "mconf", the encryptor will be deployed

copied the entire record-and-playback module of BigBlueButton master (pre 0.81) to the v0.8 tag; the only file merged is record-and-playback/core/lib/recordandplayback.rb

insert the scroll bar on the chat automatically instead of grow the div indefinitely; little improvement on the deploy script for the recordings

integrated the video playback into master, but the whiteboard events playback, as well as the presentation playback, is not functional yet - it seems that the writing.js is broken on master, tried to fix it without success