added command line options for selecting requirements to test app
removed wrong/redundant log output
added flag for turning the synch of commands on and off
added comment for flag
removed unused code
fixed several issues with Ark importer

- work with new CSV lib
- handle missing path in file name file
- report inability to open a file via exception
Merge branch 'master' of https://github.com/ICS-TU-Ilmenau/fog.git