v2015.05.04

• Fix the configuration path for FreeBSD. #567/#552. Thanks Ronald van Zantvoort(The-Loeki).
• Fix non grouping support in POSIX sed. Thanks Ronald van Zantvoort(The-Loeki).
• Add Debian 8 support. Thanks Matt Black(mafrosis)
• Improve Debian version parsing. Thanks Mark Lee(malept)
• Make sure we update packages list one Chris Lea's PPA repository is added.
• Hard code the Debian Squeeze backports to the DE mirror since the main repository is down. Thanks @panticz. #589.
• Only install git if not already installed. #560
• Fix openSUSE 13.2 where we need to pass --replaceflags. Thanks Roman Inflianskas(rominf). #504.
• Make sure that a recent enough requests package is installed in Debian/Ubuntu.
• Install tornado on git installs for the develop branch if necessary. #580
• Add support for Ubuntu 15.04