Autocomplete strict mode (Ajax)
Autocomplete can be also used with Ajax data source. In the below example, suggestions for the "Car" column are
loaded from server.
To load data from remote (asynchrous) source, assign a function to the 'source' property. Function should
perform the server side request and call the callback function when the result is available.
The property options overrides `defaults` defined in Bootstrap Typeahead. It may be useful to
configure the number of displayed suggestions.