Instance homepage support (#4007)

* Prepare homepage parsers

* Add ability to update instance hompage

* Add ability to set homepage as landing page

* Add homepage preview in admin

* Dynamically update left menu for homepage

* Inject home content in homepage

* Add videos list and channel miniature custom markup

* Remove unused elements in markup service

2 files changed, 24 insertions, 20 deletions

diff --git a/client/src/app/menu/menu.component.html b/client/src/app/menu/menu.component.html
index 2e07deca2..fcc0bc21a 100644
--- a/client/src/app/menu/menu.component.html
+++ b/client/src/app/menu/menu.component.html
@@ -123,24 +123,9 @@
       <div class="on-instance">
         <div i18n class="block-title">ON {{instanceName}}</div>
 
-        <a class="menu-link" routerLink="/videos/overview" routerLinkActive="active">
-          <my-global-icon iconName="globe" aria-hidden="true"></my-global-icon>
-          <ng-container i18n>Discover</ng-container>
-        </a>
-
-        <a class="menu-link" routerLink="/videos/trending" routerLinkActive="active">
-          <my-global-icon iconName="trending" aria-hidden="true"></my-global-icon>
-          <ng-container i18n>Trending</ng-container>
-        </a>
-
-        <a class="menu-link" routerLink="/videos/recently-added" routerLinkActive="active">
-          <my-global-icon iconName="recently-added" aria-hidden="true"></my-global-icon>
-          <ng-container i18n>Recently added</ng-container>
-        </a>
-
-        <a class="menu-link" routerLink="/videos/local" routerLinkActive="active">
-          <my-global-icon iconName="home" aria-hidden="true"></my-global-icon>
-          <ng-container i18n>Local videos</ng-container>
+        <a class="menu-link" *ngFor="let commonLink of commonMenuLinks" [routerLink]="commonLink.path" routerLinkActive="active">
+          <my-global-icon [iconName]="commonLink.icon" aria-hidden="true"></my-global-icon>
+          <ng-container>{{ commonLink.menuLabel }}</ng-container>
         </a>
       </div>
     </div>
diff --git a/client/src/app/menu/menu.component.ts b/client/src/app/menu/menu.component.ts
index 8fa1de326..2f7e0cf07 100644
--- a/client/src/app/menu/menu.component.ts
+++ b/client/src/app/menu/menu.component.ts
@@ -4,7 +4,17 @@ import { switchMap } from 'rxjs/operators'
 import { ViewportScroller } from '@angular/common'
 import { Component, OnInit, ViewChild } from '@angular/core'
 import { Router } from '@angular/router'
-import { AuthService, AuthStatus, AuthUser, MenuService, RedirectService, ScreenService, ServerService, UserService } from '@app/core'
+import {
+  AuthService,
+  AuthStatus,
+  AuthUser,
+  MenuLink,
+  MenuService,
+  RedirectService,
+  ScreenService,
+  ServerService,
+  UserService
+} from '@app/core'
 import { scrollToTop } from '@app/helpers'
 import { LanguageChooserComponent } from '@app/menu/language-chooser.component'
 import { QuickSettingsModalComponent } from '@app/modal/quick-settings-modal.component'
@@ -35,6 +45,8 @@ export class MenuComponent implements OnInit {
 
   currentInterfaceLanguage: string
 
+  commonMenuLinks: MenuLink[] = []
+
   private languages: VideoConstant<string>[] = []
   private serverConfig: ServerConfig
   private routesPerRight: { [role in UserRight]?: string } = {
@@ -80,7 +92,10 @@ export class MenuComponent implements OnInit {
   ngOnInit () {
     this.serverConfig = this.serverService.getTmpConfig()
     this.serverService.getConfig()
-      .subscribe(config => this.serverConfig = config)
+      .subscribe(config => {
+        this.serverConfig = config
+        this.buildMenuLinks()
+      })
 
     this.isLoggedIn = this.authService.isLoggedIn()
     if (this.isLoggedIn === true) {
@@ -241,6 +256,10 @@ export class MenuComponent implements OnInit {
     }
   }
 
+  private buildMenuLinks () {
+    this.commonMenuLinks = this.menuService.buildCommonLinks(this.serverConfig)
+  }
+
   private buildUserLanguages () {
     if (!this.user) {
       this.videoLanguages = []