[UI] Minor CSS Chromium compatibility fix.

Author: hackademix

src/ui/popup.css

@@ -11,6 +11,7 @@ body {
   border-bottom: 0.06em solid #eee;
   display: flex;
   -moz-user-select: none;
+  user-select: none;
 }
 
 

src/ui/ui.css

@@ -167,6 +167,7 @@ input[type="checkbox"] {
 
 .presets {
   -moz-user-select: none;
+  user-select: none;
 }
 .sites {
   border: 0;