Video player UI on current student videos

The videos on the Current Student page suffer from the same obscured caption controls recently discovered on the splash page video. This adds the same fix to these videos, too.

sharedcode/less/4.0.less

@@ -1556,6 +1556,10 @@ a[class^="featured-link-"] {
     			video {
     				display: block;
     			}
+
+            	.mejs-captions-selector {
+            		height: 100px !important;
+            	}
     		}
     	}
     }