Blog navigation admin view has actual functionality.
Fixed some issues with change/add custom forms/fieldsets.
Re-generated initial migration.
Blog navigation nodes should always be displayed in admin
Improved query executed for layout page choices.
Layouts section should be displayed just after the blog setup section.
Added validation for layouts formset.
Changed categories field with custom model since queries for Tags
are expesive.
Added header blog fields + categories field submission fixes
Added factory for abstract models with cms placeholder.
Added current site for entries changelist view
Added entry title section for entry page rendering
Added image field for entry thumbnail.
Filtered blog choices by current sites in the blog entry add form.
Added level identation in page title choices.
Added navigation preview for the blog chnage form navigation tool.
Added tagit widget for blog categories.
Renamed field creation date to publication date.
Fixed issue where navigation preview not shown when adding node for the first time.
Added validation for pub dates on entry form. Also, as per requirements, publication date should be reset when entry gets published.
Blog author field is now an actual user. Added select2 field for author on entry forms.
replaced author var name with user. mistake when moving code around.