Bootstrap Theme
Simply the best theme for Grocery CRUD

$crud->unset_bootstrap();with the above one line of code you are actually removing the calls for:
$crud->unset_jquery();you can remove the call of the jquery from grocery CRUD.
Bootstrap V3 is simply the version that we all loved and many templates and websites were based on Bootstrap V3
Reasons to buy the version 3:
Bootstrap V4 is the latest stable release of twitter bootstrap that we all know.
Reasons to buy the version 4: