Merge pull request #52 from jonas054/bugfix1

Correction of comments in config file
Handle interpreter messages more flexibly #50
Bail out if we can't find a "when ... ;" due to lack of tokens.

This avoids a crash, but potentially misses a violation.
Merge pull request #53 from jonas054/bugfix2

Bail out if we can't find a "when ... ;" due to lack of tokens.
Deal with syntax errors in inspected files.