added new images for the use of gerrit and jenkins tools
added lost data for development
addedd the untis user guide

Change-Id: I0fd744d4e1af1dd81a2ebc41baa1af729bc4b3fe
fixed bug in model where ordering was being set blank
made changes to the untis documentation
made changes to the development environment documentation

Change-Id: I76f1785f6fc5d933d5325227d951fffcb3562fb7
Merge changes I76f1785f,I0fd744d4

* changes:
  fixed bug in model where ordering was being set blank made changes to the untis documentation made changes to the development environment documentation
  added new images for the use of gerrit and jenkins tools added lost data for development addedd the untis user guide