feat(extra-features): enable abstract utilities and cleanup imports

falcon/_dev/css/theme/custom/_custom.scss

@@ -13,15 +13,12 @@ Look up all available Bootstrap variables here: https://rstudio.github.io/bslib/
 //@import "abstracts/base";
 @import "abstracts/functions";
 @import "abstracts/mixins";
-//@import "abstracts/utilities";
+@import "abstracts/utilities";
 
 // Components: parts of the theme itself that are not associated with a module.
 @import "components/buttons";
 @import "components/forms";
 
-// Modules: Styling for specific modules.
-//@import "modules/";
-
 //Layouts: Parts of a page, such as the header, footer, etc.
 //@import "layout/footer";
 @import "layout/header";