Fix missing filmstrip scss in pro template

coderedcms/project_template/pro/website/static/website/src/custom.scss

@@ -16,6 +16,7 @@
 // your own styles instead.
 @import "coderedcms/scss/crx-article";
 @import "coderedcms/scss/crx-bs-overrides";
+@import "coderedcms/scss/crx-filmstrip";
 @import "coderedcms/scss/crx-gallery";
 @import "coderedcms/scss/crx-hero";
 @import "coderedcms/scss/crx-location";