make html title show the current page
refactor ui authentication

- use token only at specific endpoint for getEntry/getEntries
- form-auth and cookies for web client
- no http basic
- be able to logout (removes cookies)
fixes login redirect

"referer" url is resolved against configured base url
Merge branch 'master' into heroku
return early when re-extracting, use status request for progress info
longer extraction timeout, `ClearIndex` waits for current indexes to finish
Merge branch 'master' into heroku