Pull request #3: Feature/VECTO-1579 create json filewriter for iepc

Merge in VECTO/fk_vecto-dev from feature/VECTO-1579-create-json-filewriter-for-iepc to develop

* commit 'f2c62c7d':
  adjusted changed flag
  set tab index, some bug fixes
  minor bug fixes
  added additional checks
  changed "Send to .." button functionality
  added additional buttons to view selected FL Curve files
  added additional buttons to view selected curve files
  minor bug fixes
  added validation methods,  ihpc input class and added additional buttons functionality