Better exceptions thrown in unique_check for EPP module
Use more information about the file name and no crash when file is not found
Pid not pluid in process creation
Regexp no works
Adde sample id to the file names
Artifact id not sample id should be used
Print is not a good logging praxis, use logger instance instead
Use logger instead of print in attach_caliper_files
Docstring for epp module
Proper logging in qc_amount_calculation script
Merge pull request #21 from alneberg/master

Proper logging, documentation for both scripts + new functionality for attach_caliper_files.py.