copying the implementation of the network monitor from master (almost 0.81-beta) to tag v0.8, so it can be easily integrated with an older version of BigBlueButton
hiding also the total bandwidth consumed - it's not working properly in some situations, so it will be hidden for now
changed the way the network monitor window is presented; now there's a button that must be clicked in order to pop up the window; the bandwidth measurement is done only when the user clicks on the refresh icon, and it doesn't check twice in the 30 seconds interval; also fixed the window height, that is now calculated given the internal panel height
Merge branch 'network-stats' into network-monitor-0.81

Conflicts:
	bigbluebutton-client/locale/en_US/bbbResources.properties
	bigbluebutton-client/locale/pt_BR/bbbResources.properties
	bigbluebutton-client/src/org/bigbluebutton/common/Images.as
	bigbluebutton-client/src/org/bigbluebutton/common/assets/images/bandwidth.png
	bigbluebutton-client/src/org/bigbluebutton/core/services/BandwidthMonitor.as
	bigbluebutton-client/src/org/bigbluebutton/core/services/StreamMonitor.as
	bigbluebutton-client/src/org/bigbluebutton/main/events/NetworkStatsEvent.as
	bigbluebutton-client/src/org/bigbluebutton/main/maps/ApplicationEventMap.mxml
	bigbluebutton-client/src/org/bigbluebutton/main/model/NetworkStatsData.as
	bigbluebutton-client/src/org/bigbluebutton/main/model/users/NetConnectionDelegate.as
	bigbluebutton-client/src/org/bigbluebutton/main/views/MainApplicationShell.mxml
	bigbluebutton-client/src/org/bigbluebutton/main/views/NetworkStatsWindow.mxml
	bigbluebutton-client/src/org/red5/flash/bwcheck/ClientServerBandwidth.as
	bigbluebutton-client/src/org/red5/flash/bwcheck/app/BandwidthDetectionApp.as
Merge branch 'network-monitor-0.81' into mconf-live0.4

Conflicts:
	bigbluebutton-client/src/org/bigbluebutton/common/Images.as
	bigbluebutton-client/src/org/bigbluebutton/main/maps/ApplicationEventMap.mxml