Core contrib update. Added travis.

[podarok]

Should be merged after #69

Steps for review

• clone core_contrib_update branch
• vagrant up && vagrant ssh
• cd /vagrant/docroot && sh reinstall.sh
• go to ppdorg.192.168.56.112.xip.io and find a working site

For getting stats working there is a need to add every minute cron run into crontab of the vm

* * * * * curl --silent http://path_to_cron_url

[anpolimus]

Tested. Core is updated at local. http://screencloud.net/v/7oAz