Merge pull request #1 from torchbox/master

merge upstream
send init_new_page signal when creating a new page in the admin
Merge branch 'master' of https://github.com/torchbox/wagtail
add next and previous published siblings to Page model
made published siblings a single query
fix kwarg spacing
Merge branch 'master' of https://github.com/torchbox/wagtail into feature/init_new_page__signal
only send signal outside if not POSTing new page
Merge branch 'master' of https://github.com/torchbox/wagtail into published_pagination
return a queryset instead of the first sibling
moved tests to page model instead of queryset
Merge branch 'master' into published_pagination
Added changelog entry for #301
Changes to get_next/prev_siblings tests
Make get_next/prev_siblings take an inclusive flag
Minor coding style fix
Merge branch 'pr/300'
Merge branch 'pr/301'

Conflicts:
	CHANGELOG.txt
Merge remote-tracking branch 'upstream/master'