Update all existing copyright headers under integration.
Add copyright headers to those files that didn't have them.
Remove extraneous material from file comments.
Update and add a few comments.
Merge remote-tracking branch 'origin/develop' into rebased/develop/update-test-headers

Conflicts:
	components/tools/OmeroPy/test/integration/test_figureExportScripts.py
Merge remote-tracking branch 'origin/develop' into rebased/develop/update-test-headers

Conflicts:
	components/tools/OmeroPy/test/integration/test_thumbnailPerms.py
Mark one test as xfail.
Merge pull request #1657 from ximenesuk/rebased/develop/update-test-headers

Update copyright and comments in Python integration tests (rebased onto develop)