sample: drop uri_root from base_url in http-server.

By default there is "0.0.0.0", and this address will work only from
the same machine, and besides there is no need in uri_root in base_url,
because it will be added automatically by browser.
Finish a sentence
Avoid other RNG initialization FS reads when urandom file is specified
Oops; revert testing code
Merge remote-tracking branch 'origin/patches-2.0'