Folders was not actually tested by tests. Fix tests and add more tests.
Fix bug in code unearthed by now-working tests: defaults were not checked
for job folders.
Task: 49188
Change-Id: I922af7a28b0ec0c99ef3f8a17b3d5a9c10f2dce0
Rename fixtures directory to job_fixtures to prepare for adding view_fixtures
directory in the following commits.
Change-Id: Ic20997cae020b542ddc22bf444fa6b92fbcae064