Added multi-backend support into wagtail search. Added Database search backend
Search: Updated search handlers and tests to use get_search_backend
Search DB Backend: Don't ignore the fields parameter
Search: Unit tests
Search: Fixed issue with query string normalisation not removing double spaces
More unit tests
Search: Various tweaks to backend importer
Search: more unit tests
update_index command is now callable from unit tests
DB backend now doesnt attempt to search on callable fields
More improvements to unit tests
Added multi backend support into searcher
Search: Use self.stdout.write for messages in management commands
More unit tests changes
Search: test retrieval of results
Merge branch 'feature/search-tests' into feature/search-backends
remove celery from requirements in setup.py
Fixed crash when tests are run without WAGTAILSEARCH_BACKENDS setting set
Merge pull request #29 from kaedroho/feature/search-backends

Multiple backend support in wagtailsearch
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