Packer file that creates VirtualBox, VMWare and Amazon EC2 VMs from the Cypress build script

Updated gitignore to ignore Packer cache/output

Updated contrib README to include cypress.json

Added compressor post-processors for the two VM builders

Added Packer-built tarballs to gitignore

Preseed file for Packer VM bootstrapping
Updated MPL caching to only cache if it's the MPL being asked for (AKA if there's no test set)
Removed some caching in the patients controller that could cause issues
Added demo_mode flag to cypress.yml
Added demo mode message to sign up/in pages, and to header

Added demo_message and demo_login_message defaults to cypress.yml

Added header styling for demo banner

Updated demo_mode code to move it into application.html.erb instead, and tweaked MPL code to not display a second header on the patient list

Removed unused demo login message from cypres.yml

Updated patients controller to not add demo mode flag to more renders, and changed demo mode to false by default

Changed demo mode message to include the demo server specific wipe time

Added cleanup tasks to clear out the database of basically everything but the Users

New date for erasure of data in cypress.yml

Added feedback to database cleanup rake task

HTML-safed the demo_message constant so we can put links in the banner message

Defaulted demo_mode to false
Added more things to the cleanup script, as well as a task to print out stats for number of Vendors/Products/Tests
Cleaned up the cleanup script to remove duplicated line
Removed Static CV product test and references
Updated README.md to use 'what is Cypress' text from projectcypress.org
Merge pull request #69 from okeefm/mu2_bump

Updated README.md to use 'what is Cypress' text from projectcypress.org
Merge pull request #61 from okeefm/packer_build

Packer file that creates VirtualBox, VMWare and Amazon EC2 VMs from the ...
Merge pull request #68 from okeefm/static_cv_removal

Removed Static CV product test and references
Merge pull request #66 from okeefm/mpl_caching_fix

Mpl caching fix
Merge pull request #67 from okeefm/server_demo_mode

Server demo mode
Merge branch 'master' of https://github.com/projectcypress/cypress into qrda_errata