Fix failures in checking out spec
Remove booking option from items#index
Update number of nights test
Remove unecessary quantity test
Deal with image_file_name for nil
Delete obsolete tests; update create listing test
Remove duplicates
Fix tests

I got rid of a bunch of obsolete tests, and did minor patchwork where I
could.  The few that are left pending are either related to things we
may need in the future (addresses, cc info, etc), or ones that were
tricky enough to make me want to leave them for next week.
Fix merge conflicts
Add css to orders#show to target in tests
Mark filter by bathroom test pending

Need to figure out JS/Capybara.
Update tests now that quantity is replaced by nights
Merge branch 'fix-tests' into refactor-tests
Remove pry statements
Merge pull request #148 from MarcGarreau/refactor-tests

Refactor tests