get_page_types no longer required in wagtailadmin.views.pages
Check that the content type passed to wagtailadmin.pages.create is valid according to subpage_types
Make can_add_subpage and can_publish_subpage permission checks return False for page models that disallow subpages; this ensures that 'add child page' links are not shown
Bypass 'choose a page type' screen when there is only one available choice in subpage_types
Scrapped ElasticUtils, use Elasticsearch-py instead

Conflicts:
	wagtail/wagtailsearch/backends/elasticsearch.py
	wagtail/wagtailsearch/indexed.py
New ElasticSearch module now supports bulk insert
Install elasticsearch instead of elasticutils on travis

Conflicts:
	.travis.yml
Tests now succeed on elasticsearch 0.90.x
Update frontenddevelopers.rst

Added notes about new image manipulation techniques
Update frontenddevelopers.rst

heading level fix
Update frontenddevelopers.rst
Update frontenddevelopers.rst

typo fix
Revert frame-writing stuff from #315, as it fails when the preview loads before the placeholder - see https://github.com/torchbox/wagtail/pull/315#issuecomment-46669595
Merge branch 'master' of github.com:torchbox/wagtail
Added a new hook to add new element rules to the Whitelister.
Add unit tests for DbWhitelister, including ability to override the whitelist via hooks
Move construct_whitelister_element_rules hook logic into DbWhitelister, as the whitelist module should be Wagtail-agnostic
add documentation for the construct_whitelister_element_rules hook
add changelog entry for construct_whitelister_element_rules hook
Merge branch 'kcl-ddh-master'