Added basic template for the lessons learned report Development, Operations and Infrastructure.
Added abstract to Development, Operations and Infrastructure report.
Added a conclusion to remember for later.
Renamed development and operations report folder.
Introduction part for the Development and Operations report done.
Added inital information to the lessons learned part about Development and Operations.
Updated lessons learned about Development and Operations.
Merge branch 'feature/devops' into merge-devops

Sorted out conflicts in the reference file.