Updated license headers.
Fixed tag renderer bug on context change (e.g. after logout).
Added JSON-to-map parser util.
Storing user information in a special object.
Moved OAuth login URL construction from login handler to separate util.
Implemented OAuth state checking.
Completed OAuth login implementation.
Added support for custom configuration of screens in app.
Added support for themes and search configuration in app.
Enhanced app profile appearance and used direct generation of login URLs.
Updated demo app configuration.