Merge video docking module from mconf. There are minor bugs which may be due

bigbluebutton-client/build.xml

bigbluebutton-client/locale/en_US/bbbResources.properties

bigbluebutton-client/resources/config.xml.template

bigbluebutton-client/src/VideodockModule.mxml

bigbluebutton-client/src/org/bigbluebutton/common/Images.as

...t/src/org/bigbluebutton/common/assets/images/arrow_in.png

...src/org/bigbluebutton/common/assets/images/lock_close.png

.../src/org/bigbluebutton/common/assets/images/lock_open.png

.../org/bigbluebutton/common/assets/images/shape_handles.png

...t/src/org/bigbluebutton/common/events/CloseWindowEvent.as

...nt/src/org/bigbluebutton/common/events/DragWindowEvent.as

...rc/org/bigbluebutton/main/views/MainApplicationShell.mxml

...n-client/src/org/bigbluebutton/main/views/MainCanvas.mxml

.../src/org/bigbluebutton/modules/chat/views/ChatWindow.mxml

...igbluebutton/modules/videoconf/business/ButtonsOverlay.as

...igbluebutton/modules/videoconf/business/VideoWindowItf.as

...uebutton/modules/videoconf/events/OpenVideoWindowEvent.as

...g/bigbluebutton/modules/videoconf/maps/VideoEventMap.mxml

.../bigbluebutton/modules/videoconf/views/PublishWindow.mxml

...rg/bigbluebutton/modules/videoconf/views/VideoWindow.mxml