Added test utils
Added test models
Created a few admin tests
Added ElasticSearch backend to tests settings
Revert "Added ElasticSearch backend to tests settings"

This reverts commit 28a77c6071faaa717dff990c06cc12b14858215a.
Added test-media folder
Wagtailimages: Test image is now created on the fly
Test models are now more human-friendly
Merge branch 'master' into tests

Conflicts:
	wagtail/wagtailadmin/tests.py
Merge branch 'tests' into search-changes

Conflicts:
	runtests.py
Removed some unneeded code from tests.EventPage model
Merge branch 'tests' into search-changes
Added .coveragerc
Added 'return NotImplemented' to list of ignored lines in coverage
Removed HTTP_HOST attribute from tests
Merge branch 'tests' into search-changes