updating the bbb-record script with master
adding a patch waiting to be pulled on BigBlueButton master (https://github.com/bigbluebutton/bigbluebutton/pull/77)
many improvements on the process and published of the encrypted format; if a public key isn't provided as metadata, the key is passed in plain text using a .txt file, otherwise a .enc file is used to store the encrypted key; fixed identation; removing all files except the published ones; handling also the files stored on /var/bigbluebutton/{meetingId} - they are now included into the zip file and will be restored on the recording server