fix #123

[knoxfighter]

Removed the HiddenSidebar, it throwed multiple errors and i dont think it was used at all.

For me it's now working fine.

The Login-Page is still very weird looking, but working.

[mroote]

I checked out this code and made a build but I still seem to be getting the <Route> elements are for router configuration only and should not be rendered. I'm looking at react-router now to see if I can spot where the error is from but I'm not too familiar with the newer versions of react-router.

[mroote]

I think I found the issue, we had Route imported from react-router instead of react-dom-router. I can load the login page when I make that change.

[mroote]

Thanks for looking into this so quickly @knoxfighter!