GitLab

* Add pre-commit
* Add dependencies
* Begin to avoid the ansible YAML short hand notation

* Mostly Python 3
* Many packages are (nearly) up-to-date in Fedora 25 in comparisson with
* ipynb role for IPython notebooks
* pyhon_stack for the common scipy-stack

pip, so I use these packages.

* Add missing host_vars files
* Fix syntax errors
* Fix Problems with Ubuntu/lab computer

* client_software variable was defined two times

* basic LaTeX installation
* includes MS fonts (incl. Arial for KIT layout)
* JACoW and DPG templates
* Axel Bernhard's bib-file
* Neo2 UTF-8 class

* Common for all systems