Showing the frontend and backend version in the settings panel.

Bumped the version to 7.6.0

overlord/src/app/core/user.ts

@@ -8,6 +8,7 @@ export class User {
   isAuthenticated: boolean;
   access_token?: string;
   exp?: number;
+  ver: string;
 
   public constructor(init?: Partial<User>) {
     Object.assign(this, init);