Removes automatic Redis Server detached startup for spec tests.
Removes automatic Redis Server detached startup for spec tests.

Problem:
  Redis Server startup was flakey and would fail a lot, thus throwing errors
about failed tests.

Changes:
  Changed the redis + resque test suites to assume an already running server
based on the already existing spec/redis.conf configuration.
  A new redis connection is created for each spec that uses db 15 instead of 0.
  Added "before each" definitions to clear the database before each spec is run.
This cleanup is simpler than deleting each key specifically after each spec.

byu/langis