channel selection works a lot better

gui/assets/main.scss

@@ -83,6 +83,38 @@ a:visited {
   }
 }
 
+
+
+.channel_header {
+    display: flex;
+    flex-direction: row;
+    align-items: center;
+}
+
+.channel_arrow {
+    width: 1em;
+    text-align: center;
+    margin-right: 0.25rem;
+}
+
+.channel_arrow--placeholder {
+    pointer-events: none;
+    visibility: hidden;
+}
+
+/* The whole right side of the row is the dblclick target */
+.channel_row_click {
+    flex: 1;
+    cursor: pointer;
+}
+
+/* still keep text non-selectable if desired */
+.channel_details {
+    -webkit-user-select: none;
+    -ms-user-select: none;
+    user-select: none;
+}
+
 .channel {
   &_details {
     flex: 0 0 100%;
@@ -392,4 +424,4 @@ a:visited {
       color: red;
     }
   }
-}
+}