add KSnorm test

• Add KSnorm test, which is the KS test plus a comparison of the normalisation. This is indicated in the summary table, in the XML results file, and with KSn p-value in the plots.
• Add allnorm test, which is all tests with KSnorm instead of KS.
• dcube.py -g -t KSnorm is now the default when generating the config.xml
  • Reminder: tests can only be specified in the config.xml, or when config.xml is generated with dcube.py -g -t TESTS.
• Safer parsing of dcube.py -t TESTS.
• On the dcube.py command line, -I is now an alias for --inline-plots
• Improve test/art-test[12].sh -v logging output