Initial version of Dockerfile

This requires Docker v1.1+, available by running
`curl -sL https://get.docker.io/ | sh`
Initial version of tests
Add login test
Add nightwatch version of tests
Change Dockerfile to only install bundle

Moved Dockerfile that builds full tree to Dockerfile.dev
Remove old selenium-webdriver tests and switch completely to nightwatch
Add .docker make task

This builds a docker file, complete with bundled Sandstorm
Add grain testing
Bump selenium-standalone version
Add tests for grain buttons
Add Dockerfile as dependency for docker build step
Fix up Dockerfile and run-docker.sh test
Bump selenium version
Add IS_TESTING parameter
Add all types of auth to tests and expand grain tests
Various fixes to get tests running on jenkins
Add note to tests README about running selenium
add systemd compatibility to install script
use proper systemd service type

as the sandstorm binary forks, reflect that behaviour in the systemd
unit configuration.
Merge pull request #106 from zined/add_systemd_compat_to_install

add systemd compatibility to install script