Fixes #383. Do not use os.path.join when constructing URLs
Fixes #382. Correct outdated note in developer docs
Merge pull request #386 from girder/python-test-doc-fix

Fixes #382. Correct outdated note in developer docs
Merge pull request #385 from girder/path-join-bug

Fixes #383. Do not use os.path.join when constructing URLs
Merge remote-tracking branch 'origin/master' into refactor-s3