clean up .has-switch.switch-mini i.switch-mini-icons

Clean up from:

.has-switch.switch-mini i.switch-mini-icons {
  height: 1.20em;
  min-height: 5px;
  line-height: 8px;
  padding-bottom: 0px;
  padding-top: 0px;
  vertical-align: text-top;
  text-align: center;
  transform: scale(0.6);
  margin-top: -1px;
  margin-bottom: -1px;
  z-index: 500;
}

to:

.has-switch.switch-mini i.switch-mini-icons {
  height: 1.20em;
  line-height: 9px;
  vertical-align: text-top;
  text-align: center;
  transform: scale(0.6);
  margin-top: -1px;
  margin-bottom: -1px;
}

static/stylesheets/bootstrap-switch.css

@@ -35,16 +35,12 @@
 }
 .has-switch.switch-mini i.switch-mini-icons {
   height: 1.20em;
-  min-height: 5px;
-  line-height: 8px;
-  padding-bottom: 0px;
-  padding-top: 0px;
+  line-height: 9px;
   vertical-align: text-top;
   text-align: center;
   transform: scale(0.6);
   margin-top: -1px;
   margin-bottom: -1px;
-  z-index: 500;
 }
 .has-switch.switch-small {
   min-width: 80px;