feat: language

src/app/ControlPage/cleftbar/cleftbar.component.html

 <div id="sidebar">
   <div class="search">
-    <input class="left-search" placeholder=" Search ..." maxlength="2048" name="q" autocomplete="off"
+    <input class="left-search" placeholder=" {{'Search'| trans }} ..." maxlength="2048" name="q" autocomplete="off"
            title="Search"
            type="text" tabindex="1" spellcheck="false" autofocus [(ngModel)]="q" (keyup.enter)="Search(q)">
   </div>

src/app/elements/nav/nav.component.ts

@@ -276,6 +276,7 @@ export class ElementNavComponent implements OnInit {
   English() {
     this._localStorage.delete('lang');
     i18n.clear();
+    location.reload();
   }
 
   Language(lan: string) {
@@ -291,5 +292,6 @@ export class ElementNavComponent implements OnInit {
         i18n.set(k, data[k]);
       });
     }
+    location.reload();
   }
 }