Put back progress bar CSS

Add changelog entry

app/assets/stylesheets/framework/tw_bootstrap.scss

@@ -33,7 +33,7 @@
 @import "bootstrap/labels";
 @import "bootstrap/badges";
 @import "bootstrap/alerts";
-// @import "bootstrap/progress-bars";
+@import "bootstrap/progress-bars";
 @import "bootstrap/list-group";
 @import "bootstrap/wells";
 @import "bootstrap/close";

changelogs/unreleased/25938-progress-bar-gone.yml

+---
+title: Adds back CSS for progress-bars
+merge_request: 8237
+author: