* better text for video test

web/app/assets/javascripts/dialog/banner.js

@@ -110,7 +110,8 @@
       }
 
       if(options.type == "yes_no") {
-        $yesBtn.show().unbind('click').click(function() {
+        var yesText = options.yes_text || 'YES'
+        $yesBtn.text(yesText).show().unbind('click').click(function() {
           if(options.yes) {
             options.yes();
           }

web/app/assets/javascripts/react-components/stores/WebcamViewer.js.jsx.coffee

@@ -345,7 +345,15 @@ mixins.push(Reflux.listenTo(VideoStore, 'onVideoStateChanged'))
     $root = $(@getDOMNode())
     $select = $root.find('.webcam-select-container select')
     if Object.keys(@state.deviceNames).length == 0
-      VideoActions.testVideo()
+
+      context.JK.Banner.showYesNo({
+        yes_text: 'RUN TEST',
+        title: "Run Video Test?",
+        html: "A video window will show up with changing colors and shapes for 10 seconds.  The test was successful if you were able to see the changing colors.  Close the window once the colors and shapes stop changing.",
+        yes: =>
+          VideoActions.testVideo()
+      })
+
     else
       device = $select.val()
       #VideoActions.selectDevice(device, {})