lib: allow change value through js

only in case skip is true
as we won't fire event, we allow to change
that value to display the switcher as it should

web_widget_boolean_switch/static/lib/bootstrap-switch/README.md

@@ -8,4 +8,5 @@ directories at this [revision](https://github.com/nostalgiaz/bootstrap-switch/
 tree/a39a1e9d6059822235bf4a9c0e7700a7e6a5ad19/dist) the september 30th 2015.
 
 The default library doesn't allow to change value through javascript if 
-switcher is set `readonly` or `disabled`.
+switcher is set `readonly` or `disabled`. We add a small change to
+allow it when skip is true.

web_widget_boolean_switch/static/lib/bootstrap-switch/bootstrap-switch.js

@@ -135,6 +135,9 @@
         if (typeof value === "undefined") {
           return this.options.state;
         }
+        if (!skip && (this.options.disabled || this.options.readonly)) {
+          return this.$element;
+        }
         if (this.options.state && !this.options.radioAllOff && this.$element.is(":radio")) {
           return this.$element;
         }