Merge pull request #69 in VECTO/vecto-sim from ~EMLUZRAPH/vecto-sim:master to master

* commit '19308cad':
  -Updated Release Notes
  version update
  GUI Update für Retarder
  - Import WHTC Factors from XML file - Target framework changed to 4.5 (same as VECTO-Engine)
  Release Notes update
  - User Manual update - Fix in JIRA dialog
  User Manual update (unfinished)
  - Fixed path to JIRA guide - Updated changes.md - Updated Release Notes