Deleted files that were moved in Wagtail 0.4
Removed css_path argument from wagtailuserbar template tag
Use of old style routing will now raise a RuntimeError
Raise error when indexed_fields setting is used
Make tests.EventPage use search_fields
Make sure that update_index doesn't attempt to index the SearchTestOldConfig model
Removed features deprecated in wagtailcore models
Removed show_as_mode
Updated deprecation warning classes

Also removed some occurances of RemovedInWagtail06Warning
Completely removed all features deprecated in 0.4
Merge remote-tracking branch 'torchbox/master' into purge-0.4-deprecated-features

Conflicts:
	wagtail/tests/models.py
	wagtail/wagtailsearch/indexed.py
	wagtail/wagtailsearch/tests/test_indexed_class.py
indexed -> index in EventPage
Merge branch 'kaedroho-purge-0.4-deprecated-features'