Custom form improvements

...pen/CoreBundle/DataFixtures/MongoDB/LoadConfiguration.php

src/Biopen/GeoDirectoryBundle/Form/ElementType.php

...rectoryBundle/Resources/js/element-form/check-and-send.js

...sources/scss/components/element-form/_category-field.scss

...iopen/GeoDirectoryBundle/Resources/scss/element-form.scss

...ws/admin/core_custom/custom-fields/form-builder.html.twig

...element-form/form-partials/checkbox-radio-group.html.twig

...urces/views/element-form/form-partials/checkbox.html.twig

...sources/views/element-form/form-partials/select.html.twig

...Resources/views/element-form/form-partials/text.html.twig

...ndle/Resources/views/element-form/form-renderer.html.twig

...Biopen/GeoDirectoryBundle/Services/ElementFormService.php