the error was due to a faulty logic. 'useRouter' was being used to detect pathname, which doesn't
keep original url on 404 page.
this commit fixes that.
this commit also makes it easy to go to
IMDb by adding a clear link on error page.
closes https://github.com/zyachel/libremdb/issues/50
the application is now rewritten in next.js. this commit also adds the ability to see trailers, did you know, more like this, etc. on title page.
BREAKING CHANGE: the whole application is rewritten from scratch.