A module to push a URL to all users

This is a patch for [issue 1241](http://code.google.com/p/bigbluebutton/issues/detail?id=1241&colspec=ID%20Type%20Status%20Priority%20Milestone%20Owner%20Component%20Summary).


PS.  Not sure if the bbb git is setup correctly, or if it's my machine, but .gitignore isn't ignoring the .actionScriptProperties and .project files.  The .actionScriptProperties and .project files are not needed for this module.  Possibly someone can show me how to not submit these files in the patch.