re-arrange present module dir

.../bigbluebutton/modules/present/api/IPresentationButton.as

.../bigbluebutton/modules/present/managers/PresentManager.as

...g/bigbluebutton/modules/present/maps/PresentEventMap.mxml

...bluebutton/modules/present/ui/views/FileUploadWindow.mxml

...igbluebutton/modules/present/ui/views/GotoPageDialog.mxml

...uebutton/modules/present/ui/views/PresentationWindow.mxml

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

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

...button/modules/whiteboard/events/WhiteboardButtonEvent.as

...bluebutton/modules/whiteboard/views/WhiteboardButton.mxml

...luebutton/modules/whiteboard/views/WhiteboardToolbar.mxml