Merge branch 'carousel-remove' into 'master'

Remove Bootstrap Carousel

The Bootstrap carousel module is used for image carousels, and we don't
use it anywhere on the site.

Fixes #14670.

See merge request !3624

app/assets/javascripts/application.js.coffee

@@ -22,7 +22,17 @@
 #= require cal-heatmap
 #= require turbolinks
 #= require autosave
-#= require bootstrap
+#= require bootstrap/affix
+#= require bootstrap/alert
+#= require bootstrap/button
+#= require bootstrap/collapse
+#= require bootstrap/dropdown
+#= require bootstrap/modal
+#= require bootstrap/scrollspy
+#= require bootstrap/tab
+#= require bootstrap/transition
+#= require bootstrap/tooltip
+#= require bootstrap/popover
 #= require select2
 #= require raphael
 #= require g.raphael

app/assets/stylesheets/framework/tw_bootstrap.scss

@@ -43,7 +43,6 @@
 @import "bootstrap/modals";
 @import "bootstrap/tooltip";
 @import "bootstrap/popovers";
-@import "bootstrap/carousel";
 
 // Utility classes
 .clearfix {