Fix Build#duration when TimeZone is not UTC

I got wrong Build#durations, cause ServerTime is not UTC.

Sample Output:
    $: build.from
    => Sat, 30 Mar 2013 16:58:42 UTC +00:00

    $: Time.now
     => 2013-03-30 18:20:25 +0100

    $: Time.zone.now
     => Sat, 30 Mar 2013 17:20:29 UTC +00:00
Serving gravatar images form an https source
This is safe to run on gitlab-ci http and https servers
Minor tweak to install docs for postgres.

Installing gems with postgres should be "--without mysql" instead of
"postgres".  Also, database.yml example is ".postgresql" instead of
".postgres".
Typo fix: name of postgresql database.yml template.
Merge pull request #215 from jperville/patch-2

Typo fix: name of postgresql database.yml template.
allow sing in with GitLab email or login
Merge branch 'master' of github.com:gitlabhq/gitlab-ci
Update installation.md

Typo error
Merge pull request #209 from tom5760/minor-install-doc-tweak-postgres

Minor tweak to install docs for postgres.
docs: don't need restart nginx to reload configuration
close #229: Added CSS rules for Firefox, Opera and IE to wrap the trace of a build
Introduced $APP_USER var for running the service

...as that $APP_USER

Solution for gitlabhq/gitlab-ci#186
Update installation.md
Update installation.md

Logout MYSQL
Merge pull request #231 from KNEIP/master

close #229: Added CSS rules for Firefox, Opera and IE to wrap the trace ...
Merge pull request #232 from Sispheor/patch-1

Patch 1
Merge pull request #162 from gottwald/gravatar-https-fix

Serving gravatar images form an https source
Merge pull request #186 from thomwiggers/patch-2

Introduced $USER var for running the service as
Create dirs for sockets and pids (otherwise GitLab CI service fails to start correctly)
Merge pull request #234 from WnP/patch-1

Update installation.md