bump versions of south and wagtail
update deprecated tag libraries
migrate indexed_fields to search_fields
replace deprecated get_other_siblings call with get_siblings(inclusive=False)
Update modelcluster required
missing wagtailimages_tags

Event Pages give a 500 error when page has a speaker image because the page uses the image template tag  {% image speaker.image width-200 %}.

Loads wagtailimages_tags
Merge pull request #40 from huxley/patch-1

missing wagtailimages_tags
fix tag imports in event_page.html
specify wagtail 0.6 in requirements
fix import of register_signal_handlers from wagtailsearch
Fixed missing import in template tag

events template tag for home page was not rendering due to missing import of `datetime.date`
Merge pull request #43 from jsma/patch-1

Fixed missing import in template tag
update wagtail.wagtailsearch.indexed imports to wagtail.wagtailsearch.index; version bump to wagtail 0.7
add wagtailsites app