Added entry to response context for blog entry rendering.
Promotion Plugin: blogs available should be only the ones from the current site.
Enabled blog urls for proxied sites.
Added support for entry co-authors + some forms code cleanup
Added publishing actions in entry changelist view.
Draft Entries should cannot be published from changelist view.
Pub dates for entries published from changelist are now reset.
Changed bottom buttons on entry change form.
Merge branch 'master' into LUN-1507

Conflicts:
	cms_blogger/models.py
	cms_blogger/templates/cms_blogger/blog_header.html
	cms_blogger/templates/cms_blogger/entry_bottom.html
	cms_blogger/templates/cms_blogger/entry_summary.html
	cms_blogger/templates/cms_blogger/entry_top.html