* merge && backwards functionality working (kind of) WIP
* wip - need to fix forward and backwards buttons
* history works well but only for channel related pages - need to add title update hook for other pages
* moved useEffect to router
* renamed buttonNavigation -> navigationButton
* removed unused history
* fixed issue with lbry.tv
* disable button if no entries
* added max size for history
* set correct margin-top for nav button dropdown
* cleanup
Co-authored-by: Sean Yesmunt <sean@lbry.io>
