Remove steak from acceptance helper
Fix layer presenter spec
Remove import spec
Remove old non-working specs and set some others as pending
Fix parsing of redis configuration
Fix Redis startup on testing
Set test redis port to 6335 in the sample configuration file
Fail on Rails initialization when unable to connect to Redis
Add info about the need for redis during upgrade
Set default redis database on redis initializer
Merge branch 'master' into tests_cleanup

Conflicts:
	spec/acceptance_helper.rb
	spec/models/data_import_spec.rb