[webui] Handle timeout errors as request timeouts
[backend] convert also times of build statistics

* drop old own extract build results code
* build script extracts _statistics file now into OTHER/ directory
[api] do not parse tars as XML - they might be *LARGE*
[api] fix failures of rake cron jobs (eg. updateissues)
[webui] better display of codemirror scrollbars
[webui] catch IOError in log file retrival
[api] additional route with extra owner ship informations for the webui only.
Merge remote-tracking branch 'upstream/master' into fedora