Change brand color and logotypes (#18592)

- Add rake task for generating Apple/Android icons and favicons from SVG
- Add rake task for generating PNG icons and logos for e-mails from SVG
- Remove obsolete Microsoft icons and configuration
- Remove PWA shortcut icons

app/views/layouts/admin.html.haml

@@ -8,12 +8,12 @@
       .sidebar-wrapper__inner
         .sidebar
           = link_to root_path do
-            = image_pack_tag 'logo.svg', class: 'logo', alt: 'Mastodon'
+            = render_logo
 
           .sidebar__toggle
             .sidebar__toggle__logo
               = link_to root_path do
-                = svg_logo_full
+                = logo_as_symbol(:wordmark)
 
             = link_to '#', class: 'sidebar__toggle__icon' do
               = fa_icon 'bars'

app/views/layouts/application.html.haml

@@ -11,12 +11,17 @@
     - if storage_host?
       %link{ rel: 'dns-prefetch', href: storage_host }/
 
-    %link{ rel: 'icon', href: favicon_path, type: 'image/x-icon' }/
-    %link{ rel: 'apple-touch-icon', sizes: '180x180', href: '/apple-touch-icon.png' }/
-    %link{ rel: 'mask-icon', href: '/mask-icon.svg', color: '#2B90D9' }/
-    %link{ rel: 'manifest', href: '/manifest.json' }/
-    %meta{ name: 'msapplication-config', content: '/browserconfig.xml' }/
-    %meta{ name: 'theme-color', content: '#282c37' }/
+    %link{ rel: 'icon', href: '/favicon.ico', type: 'image/x-icon' }/
+
+    - %w(16 32 48).each do |size|
+      %link{ rel: 'icon', sizes: "#{size}x#{size}", href: asset_pack_path("media/icons/favicon-#{size}x#{size}.png"), type: 'image/png' }/
+
+    - %w(57 60 72 76 114 120 144 152 167 180 1024).each do |size|
+      %link{ rel: 'apple-touch-icon', sizes: "#{size}x#{size}", href: asset_pack_path("media/icons/apple-touch-icon-#{size}x#{size}.png") }/
+
+    %link{ rel: 'mask-icon', href: asset_pack_path('media/images/logo-symbol-icon.svg'), color: '#6364FF' }/
+    %link{ rel: 'manifest', href: manifest_path(format: :json) }/
+    %meta{ name: 'theme-color', content: '#6364FF' }/
     %meta{ name: 'apple-mobile-web-app-capable', content: 'yes' }/
 
     %title= content_for?(:page_title) ? safe_join([yield(:page_title).chomp.html_safe, title], ' - ') : title
@@ -39,5 +44,5 @@
     = content_for?(:content) ? yield(:content) : yield
 
     .logo-resources
-      = raw render file: Rails.root.join('app', 'javascript', 'images', 'logo_transparent.svg')
-      = raw render file: Rails.root.join('app', 'javascript', 'images', 'logo_full.svg')
+      = render_symbol :icon
+      = render_symbol :wordmark

app/views/layouts/auth.html.haml

@@ -6,7 +6,7 @@
     .logo-container
       %h1
         = link_to root_path do
-          = svg_logo_full
+          = logo_as_symbol(:wordmark)
 
     .form-container
       = render 'flashes'

app/views/layouts/embedded.html.haml

@@ -21,4 +21,4 @@
     = yield
 
     .logo-resources
-      = raw render file: Rails.root.join('app', 'javascript', 'images', 'logo_transparent.svg')
+      = render_symbol :icon

app/views/layouts/mailer.html.haml

@@ -24,7 +24,7 @@
                               %tr
                                 %td.column-cell
                                   = link_to root_url do
-                                    = image_tag full_pack_url('media/images/mailer/logo_full.png'), alt: 'Mastodon', height: 34, class: 'logo'
+                                    = image_tag full_pack_url('media/images/mailer/wordmark.png'), alt: 'Mastodon', height: 34, class: 'logo'
 
     = yield
 
@@ -49,4 +49,4 @@
                                 %p= link_to t('application_mailer.notification_preferences'), settings_preferences_notifications_url
                               %td.column-cell.text-right
                                 = link_to root_url do
-                                  = image_tag full_pack_url('media/images/mailer/logo_transparent.png'), alt: 'Mastodon', height: 24
+                                  = image_tag full_pack_url('media/images/mailer/logo.png'), alt: 'Mastodon', height: 24

app/views/layouts/public.html.haml

@@ -9,7 +9,7 @@
         %nav.header
           .nav-left
             = link_to root_url, class: 'brand' do
-              = svg_logo_full
+              = logo_as_symbol(:wordmark)
 
             - unless whitelist_mode?
               = link_to t('directories.directory'), explore_path, class: 'nav-link optional' if Setting.profile_directory
@@ -42,7 +42,7 @@
               %li= link_to t('about.api'), 'https://docs.joinmastodon.org/client/intro/'
           .column-2
             %h4= link_to t('about.what_is_mastodon'), 'https://joinmastodon.org/'
-            = link_to svg_logo, root_url, class: 'brand'
+            = link_to logo_as_symbol, root_url, class: 'brand'
           .column-3
             %h4= site_hostname
             %ul