Fix flake8 issues in omeroweb/webredirect
Add omeroweb/webredirect flake8 check to travis build
Merge branch 'develop' into flake8-cleanup-webredirect

Conflicts:
	components/tools/travis-build
Update copyright years
Merge pull request #2346 from knabar/flake8-cleanup-webredirect

Flake8 cleanup of omeroweb/webredirect