Remove `/u/` and `/c/` schemes from UI

.gitignore

@@ -16,3 +16,5 @@ ui/src/translations
 
 # ide config
 .idea/
+
+target

ui/src/components/community.tsx

@@ -177,7 +177,7 @@ export class Community extends Component<any, State> {
 
   get documentTitle(): string {
     if (this.state.community.name) {
-      return `/c/${this.state.community.name} - ${this.state.site.name}`;
+      return `!${this.state.community.name} - ${this.state.site.name}`;
     } else {
       return 'Lemmy';
     }

ui/src/components/inbox.tsx

@@ -112,7 +112,7 @@ export class Inbox extends Component<any, InboxState> {
 
   get documentTitle(): string {
     if (this.state.site.name) {
-      return `/u/${UserService.Instance.user.name} ${i18n.t('inbox')} - ${
+      return `@${UserService.Instance.user.name} ${i18n.t('inbox')} - ${
         this.state.site.name
       }`;
     } else {

ui/src/components/user.tsx

@@ -213,7 +213,7 @@ export class User extends Component<any, UserState> {
 
   get documentTitle(): string {
     if (this.state.siteRes.site.name) {
-      return `/u/${this.state.username} - ${this.state.siteRes.site.name}`;
+      return `@${this.state.username} - ${this.state.siteRes.site.name}`;
     } else {
       return 'Lemmy';
     }
@@ -234,7 +234,7 @@ export class User extends Component<any, UserState> {
                   class="rounded-circle mr-2"
                 />
               )}
-              <span>/u/{this.state.username}</span>
+              <span>@{this.state.username}</span>
             </h5>
             {this.state.loading ? (
               <h5>