Merge branch 'tz-update-startup-css-2020-08-24' into 'master'

Updated generated CSS with CSS 2020-08-24

See merge request gitlab-org/gitlab!40278

.scss-lint.yml

@@ -7,7 +7,7 @@ scss_files:
 
 exclude:
   - 'app/assets/stylesheets/pages/emojis.scss'
-  - 'app/assets/stylesheets/startup/startup-general.scss'
+  - 'app/assets/stylesheets/startup/startup-*.scss'
 
 linters:
   # Reports when you use improper spacing around ! (the "bang") in !default,

app/helpers/application_helper.rb

@@ -236,12 +236,12 @@ module ApplicationHelper
   end
 
   def use_startup_css?
-    Feature.enabled?(:startup_css) && !Rails.env.test?
+    (Feature.enabled?(:startup_css) || params[:startup_css] == 'true' || cookies['startup_css'] == 'true') && !Rails.env.test?
   end
 
   def stylesheet_link_tag_defer(path)
     if use_startup_css?
-      stylesheet_link_tag(path, media: "print")
+      stylesheet_link_tag(path, media: "print", crossorigin: ActionController::Base.asset_host ? 'anonymous' : nil)
     else
       stylesheet_link_tag(path, media: "all")
     end

app/views/layouts/_startup_css.haml

 - return unless use_startup_css?
 
+- startup_filename = current_path?("sessions#new") ? 'signin' : user_application_theme == 'gl-dark' ? 'dark' : 'general'
+
 %style{ type: "text/css" }
-  = Rails.application.assets_manifest.find_sources('startup/startup-general.css').first.to_s.html_safe
+  = Rails.application.assets_manifest.find_sources("startup/startup-#{startup_filename}.css").first.to_s.html_safe

package.json

@@ -26,7 +26,7 @@
     "prettier-staged-save": "node ./scripts/frontend/prettier.js save",
     "prettier-all": "node ./scripts/frontend/prettier.js check-all",
     "prettier-all-save": "node ./scripts/frontend/prettier.js save-all",
-    "stylelint": "yarn stylelint-file 'app/assets/stylesheets/**/*.*'  'ee/app/assets/stylesheets/**/*.*' '!app/assets/stylesheets/startup/startup-general.scss' '!**/vendors/**'",
+    "stylelint": "yarn stylelint-file 'app/assets/stylesheets/**/*.*'  'ee/app/assets/stylesheets/**/*.*' '!app/assets/stylesheets/startup/startup-*.scss' '!**/vendors/**'",
     "stylelint-file": "BROWSERSLIST_IGNORE_OLD_DATA=true node node_modules/stylelint/bin/stylelint.js",
     "stylelint-create-utility-map": "node scripts/frontend/stylelint/stylelint-utility-map.js",
     "test": "node scripts/frontend/test",