Update Readme with domain in alphabetical order
New test: Check that terms readme is consistne with owl file
work-around to avoid empty URIs in namespaces
Use __init__ instead of setUp to avoid multiple call to Prov Store
Display string difference if not equal
Ignore BNode when displaying range
Merge pull request #197 from cmaumet/testTermREADMEConsistency

New test: Check if term README is consistent with owl file