Add button dropdown list in the inline search

Adding an array of fields when calling the inlineSearch component
will add a button with a dropdown list where the user can select
a field for filter the query
CSS and Javascript for the inline search button

Update the button label and the form value when the field is changed
and add margin for the caret
Use dropdown button in taxonomy inline search

Allows the user to filter the query by all fields, preferred label
or 'use for' labels