Add plain Jenkins support

[cosmin-malutan]

As part of our goal for this quarter we want to add a CI system for TPS which will allow us to ran TPS test for each daily build for each platform. For achieving this in issue #3 we agreed on using Jenkins.
Using Jenkins for this require a little bit of work, so for splitting this in smaller commits we have to start with a plain Jenkins instance, on top of which we will continue with adding jobs, plugins, etc.
https://wiki.mozilla.org/QA/Automation/Projects/TPS#List_of_Tasks

[whimboo]

This issue as filed does say nothing to any other person than you, @cosmin-malutan. Which work has to be splitted? What are you referring to? Please be more specific in your comments when filing issues or commenting on.

[cosmin-malutan]

Thanks @whimboo, I updated the first comment.

[whimboo]

PR #23 has been merged.