- revert back previous change where in build.xml we copy the config.xml from client as we don't want to
   always overwrite the config.xml everytime the dev runs ant. The dev may have a custom config.xml which
   gets overwritten with what's packaged

   it will copy the developer's config.xml but in production, it will use the template
   to generate a config.xml

   resource if they want to use this.
 - delete config.xml.dev as devs can copy config.xml.template to create their own config.xml

 - make not executable

 - allow user to pass a repository to checkout from. The default will be github.com/bigbluebutton/bigbluebutton
   if the user does not pass anything on bbb-conf --checkout

Conflicts:
	bigbluebutton-web/grails-app/conf/bigbluebutton.properties