Added SQL code to migrate to wagtail 0.4
Set default value on wagtailcore_page expired
Use elasticsearch-py instead of ElasticUtils
Converted 'indexed_fields' to 'search_fields'
Added some FilterFields to NewStudentPage
Replaced occurances of 'embedly' with 'embed'
Replaced occurances of 'image_tags' with 'wagtailimages_tags'
Replaced occurances of 'pageurl' and 'rich_text' with 'wagtailcore_tags'
Replaced occurances of 'embed_filters' with 'wagtailembeds_tags'
Import wagtail hooks from wagtailcore
Updated custom routing on ScreensIndex
Replaced occurance of 'get_other_siblings'
Bumped wagtail version to use the 0.4 release candidate