GUACAMOLE-723: Apply ellipsis when connection name overflows available space, regardless of whether the connection selection menu is used.

guacamole/src/main/webapp/app/client/styles/connection-select-menu.css

@@ -17,6 +17,10 @@
  * under the License.
  */
 
+#guac-menu .header h2.connection-select-menu {
+    overflow: visible;
+}
+
 .connection-select-menu {
     padding: 0;
     min-width: 0;