Do we still use jquery-ui? Remove it if needed.

[jibees]

Files imported:

@import '~jquery-ui/themes/base/core';
@import '~jquery-ui/themes/base/button';
@import '~jquery-ui/themes/base/resizable';
@import '~jquery-ui/themes/base/dialog';

All classes defined in those files starts with ui-

I searched for ui- in all haml files:

➜  openfoodnetwork git:(master) grep "ui-" -inr --include \*.haml
./app/views/registration/steps/_location_map.html.haml:9:      %ui-gmap-google-map{ center: "map.center", zoom: "map.zoom"}
./app/views/registration/steps/_location_map.html.haml:10:        %ui-gmap-marker{idKey: 1, coords: "latLong", options: '{ draggable: true}'}
./app/views/shared/_map.html.haml:11:      %ui-gmap-google-map{options: "map.additional_options", center: "map.center", zoom: "map.zoom",
./app/views/shared/_map.html.haml:14:        %ui-gmap-markers{models: "OfnMap.enterprises", fit: "true", 

All occurrences starts with ui-gmap which is not defined in any of those previous files.

So, the question is: do we still use jquery-ui?

Originally posted by @jibees in #10370 (comment)