Display banner on channel page

client/src/app/+video-channels/video-channels.component.html

@@ -1,4 +1,8 @@
 <div class="root" *ngIf="videoChannel">
+  <div class="banner" *ngIf="videoChannel.bannerUrl">
+    <img [src]="videoChannel.bannerUrl" alt="Channel banner">
+  </div>
+
   <div class="channel-info">
 
     <ng-template #buttonsTemplate>

client/src/app/+video-channels/video-channels.component.scss

@@ -11,6 +11,10 @@
   --myGreyOwnerFontSize: 14px;
 }
 
+.banner {
+  @include block-ratio('img', $banner-inverted-ratio);
+}
+
 .section-label {
   @include section-label-responsive;
 }

client/src/app/menu/notification.component.scss

@@ -2,7 +2,7 @@
 @import '_mixins';
 
 .content {
-  scrollbar-color: unset;
+  scrollbar-color: auto;
 }
 
 .notification-inbox-popover {

client/src/app/shared/shared-actor-image/actor-banner-edit.component.ts

@@ -36,7 +36,8 @@ export class ActorBannerEditComponent implements OnInit {
           this.maxBannerSize = config.banner.file.size.max
           this.bannerExtensions = config.banner.file.extensions.join(', ')
 
-          this.bannerFormat = $localize`maxsize: ${getBytes(this.maxBannerSize)}, extensions: ${this.bannerExtensions}`
+          // tslint:disable:max-line-length
+          this.bannerFormat = $localize`ratio 6/1, recommended size: 1600x266, max size: ${getBytes(this.maxBannerSize)}, extensions: ${this.bannerExtensions}`
         })
   }
 

client/src/sass/include/_variables.scss

@@ -53,7 +53,7 @@ $sub-menu-height: 81px;
 
 $channel-background-color: #f6ede8;
 
-$banner-inverted-ratio: 1/5;
+$banner-inverted-ratio: 1/6;
 
 $max-channels-width: 1200px;
 

server/initializers/constants.ts

@@ -614,7 +614,7 @@ const ACTOR_IMAGES_SIZE = {
   },
   BANNERS: {
     width: 1920,
-    height: 384
+    height: 317 // 6/1 ratio
   }
 }