Implemented xvfb install/config for Jenkins role
Implemented Java Runtime installation
Added Jenkins installation.  The apt package also creates
the user and installs jenkins as an init.d service
Install Jenkins and Java
Install Jenkins plugins (except Maven, which causes an exception)
Added (start of) browser script
Update ansible scripts for the jenkins vagrant box
Update ansible scripts
Add main.yml
add edxapp sandbox
Add edxlocal main
Run some tasks as jenkins user so that the permissions are correct. Also some refactoring of the jenkins tasks.
Fix ansible scripts
Remove edxapp_sandbox
Parameterize ruby version, remove unused imports, remove unused files
Use rbenv role, move items from edxlocal to jenkins that are jenkins specific
Make vars more readable, parameterize out rbenv vars
Move variables, rename variables.
Fix naming conventions
Merge pull request #209 from edx/will/jenkins

Script for creating new jenkins server