cleaned up some of the localisation strings

bigbluebutton-client/locale/en_US/bbbResources.properties

...c/org/bigbluebutton/main/views/CameraDisplaySettings.mxml

...-client/src/org/bigbluebutton/main/views/MicSettings.mxml

...c/org/bigbluebutton/modules/chat/views/AddChatTabBox.mxml

...ent/src/org/bigbluebutton/modules/chat/views/ChatBox.mxml

...dules/deskshare/view/components/DesktopPublishWindow.mxml

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

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

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