Merge branch 'riadvice-fix-presentation'

bigbluebutton-client/branding/default/style/css/V2Theme.css

...uebutton-client/src/org/bigbluebutton/common/ComboBox2.as

.../src/org/bigbluebutton/main/views/ShortcutHelpWindow.mxml

...c/org/bigbluebutton/modules/caption/views/OptionsTab.mxml

.../org/bigbluebutton/modules/chat/views/ChatOptionsTab.mxml

...es/present/ui/views/PresentationPodControlItemRenderer.as

...ton/modules/present/ui/views/UnselectableItemsComboBox.as

...screenshare/view/components/ScreensharePublishWindow.mxml

...arednotes/views/components/SharedNotesRichTextEditor.mxml