consistent titles; improved spacing

- Video source menu title was different from all others
- Create some space around the title so things don't look so crowded
- Made the title font bold

index.html

@@ -1268,7 +1268,10 @@
 		
 		<div id="popupSelector" style="display:none;">
 				<span id="videoMenu3" class="videoMenu">
-					<i class="las la-video"></i><span data-translate="video-source"> Video Source </span>
+					<div class="title">
+						<i class="las la-video"></i>
+						<span data-translate="video-source">Video Source</span>
+					</div>
 					<select id="videoSource3" ></select>			
 					<span id="refreshVideoButton" title="Activate or Reload this video device."><i style="top: 2px; cursor: pointer; position: relative; left: 10px;" class="las la-sync-alt"></i></span>
 				</span>

main.css

@@ -1089,6 +1089,11 @@ input[type=range]:focus::-ms-fill-upper {
 	z-index: 3;
 }
 
+#popupSelector .title {
+    margin-bottom: 10px;
+    font-weight: bold;
+}
+
 #audioSourceScreenshare {
 	display:block;
 	height: 60px;