More tests. Added new owner field to saved search

modified:   app/models/analysis_script.rb
modified:   app/models/saved_search.rb
new file:   db/migrate/20130118013653_add_seperate_user_owner_field_to_saved_searches.rb
modified:   db/schema.rb
modified:   spec/factories/saved_search_factory.rb
modified:   spec/models/saved_search_spec.rb
Merge branch 'master' of https://github.com/QutBioacousticsResearchGroup/bioacoustic-workbench