GIMP Jenkins Refactor Jenkins 1.107.3.5

This is the refactor release and the first iteration of the GIMP redesign on https://build.gimp.org/.

jenkins-bootstrap-2.107.4

jenkins-bootstrap-2.107.4

jenkins-bootstrap 2.107.3

Upgrade Jenkins and plugins.

jenkins-bootstrap 2.99.1

jenkins-bootstrap-2.99.1

Upgrade Jenkins and plugins to 2.99

jenkins-bootstrap 2.7.4.3

jenkins-bootstrap-2.7.4.3

bump submodule

jenkins-bootstrap 2.7.4-1

Some packaging bugfixes and improvements to .gitignore of $JENKINS_HOME.

jenkins-bootstrap 2.7.4-0

The first release of Jenkins OS packages for build.gimp.org.