Adjusted shared note naming to match the new default note name with it's id

bigbluebutton-client/locale/en_US/bbbResources.properties

...on-client/src/org/bigbluebutton/core/model/SharedNotes.as

...luebutton/modules/sharednotes/services/MessageReceiver.as

...tton/modules/sharednotes/views/SharedNotesNameWindow.mxml