Updated testing to use factories, rather than fixtures. RSpec tests are working.

Commit summaries follow.
  - First step into FactoryGirl territory.  Call Numbers moved over in the absolutely trivial case.
  - Factoryized Floors
  - Libraries moved to factory.  DatabaseCleaner actually run after tests.
  - Subject Areas factoryized
  - MOAR TESTING, also some refactoring of tests.
  - Factoryized reservations and statuses
  - User spec factorized
  - Reorganized factories, corrected error in post spec (still fails, but fails for real fieldname)
  - Floor spec now accurately reflects acts_as_list
  - Typo fixed in spec
  - Name factored out into trait
  - Fixtures eliminated, factories ascendant