Cms page_attribute tag now works when rendering titles from layout pages
Merge pull request #2 from laurafeier/LUN-1507

front-end design implementation
Added inner collapsible fieldsets support.
Changed datetimepicker widgets for start/end publication date.
Some datetimepicker styling for entry form.
Some styling for collapsible inner fieldsets;
Added schedule publish/unpublish buttons on entry form + some code cleanup.
Added reset button for datetime picker widgets.
Merge branch 'master' into LUN-1507

Conflicts:
	cms_blogger/forms.py
	cms_blogger/static/cms_blogger/css/entry-change-form.css