(no bug) fix order for postgres schema loading and tests, which depend on it
* Added dependencies to CentOS 6 setup process
* Command execution fix
Merge pull request #1342 from mr-const/master

CentOS 6 setup fixes
bug 892004 - errormill for all exceptions in middleware_app, r=AdrianGaudebert
Merge pull request #1335 from rhelmer/populate-postgres-before-make-test

(no bug) fix order for postgres schema loading and tests, which depend o...
Add block diagram of Socorro to the General Architecture page of the docs.

This is from my Fifth Elephant 2013 presentation: http://www.slideshare.net/ErikRose/what-happens-when-firefox-crashes.