Fix scm developerConnection.

Also, fix my user ID.
Ignore work directory.
Show unstable builds as yellow.

This is based on pull requests 2 & 7.

Unstable builds both with and without failing tests appear as yellow.

One issue with the current implementation is that builds that are unstable
due to being marked that way (with no failing tests) aren't enlarged as
broken jobs are.

[FIXED JENKINS-9772]
[FIXED JENKINS-10585]
[FIXED JENKINS-10614]
[FIXED JENKINS-10846]
Add support for matrix builds

Matrix builds show as red until all broken sub-jobs are claimed.

The code was based on code lifted from pull request 1 from henriklynggaard.

[FIXED JENKINS-8458]