htmlClass attribute in uiselect

[mferreira92]

Hi,

htmlClass attribute (e.g. col.xs.3) works as expected when using strapselect, however, when using the uiselect, I noticed that this attribute is not being transmited to the form in angular-schema-form-dynamic-select.js.

I've changed the code to allow this key also on uiselect and works great however I'm not aware if it has any consequences?
In this section:
<div ng-controller=\"dynamicSelectController\" class=\"form-group (...)

I have changed to the following:
<div ng-controller=\"dynamicSelectController\" class=\"form-group {{form.htmlClass}} (...)
If this is not the correct approach, can you please let me know the best method to give htmlclass to a uiselect?

Thank you!

[nicklasb]

That looks good to me, if you have the opportunity, I'd certainly appreciate a PR with that in it.