hooked up presentation text

bigbluebutton-client/libs/flexlib.swc

...rc/org/bigbluebutton/modules/present/events/SlideEvent.as

...t/src/org/bigbluebutton/modules/present/managers/Slide.as

...rg/bigbluebutton/modules/present/managers/SlideManager.as

...org/bigbluebutton/modules/present/ui/views/SlideView.mxml

bigbluebutton-web/application.properties

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