don't hide the input in onoffswitch

as it wasn't necessary and turns out it causes problems with event routing when the parent <label> includes a <button> which we use now instead of dummy links

options/onoffswitch.css

@@ -10,7 +10,7 @@
 .onoffswitch input {
   -webkit-appearance: none;
   -moz-appearance: none;
-  pointer-events: none;
+  cursor: pointer;
   position: absolute;
   top: -8px;
   bottom: -10px;
@@ -29,7 +29,6 @@
 .onoffswitch span {
   display: block;
   overflow: hidden;
-  cursor: pointer;
   height: 12px;
   padding: 0;
   line-height: 12px;