Added /categories/archives page.
Fix category archive table.
Added no index to category archives.
Fix stub on inf & fix Vanilla.Version never updating
Revert this after util/update on inf. Kludge to prevent stub on existing inf sites.
Merge branch 'master' of github.com:vanillaforums/Garden
Revert "Revert this after util/update on inf. Kludge to prevent stub on existing inf sites."

This reverts commit 36b3f34c87712b87a8b76cf9dadc4cae7f4e4519.
Change stub condition to whether any discussions exist
Updates for fixing persistent memcached
Write profile fields in correct order
Merge branch 'master' of github.com:vanillaforums/Garden
Fix paging in profile activities.
Conversations: Fix notification on new conversation.
Tagging: Add the filter menu to the tagged page.
Fix bug where users can edit any comment by modifying the request.
Markdown changes:
- Format spoilers in a div instead of a block quote.
- Format code as a block if there is at least one
Conversations:
- Make the notification headline the subject if it's there.
- Add GDN_Conversation.Type for future use.
Allow messages to filter by category.
vB imports: set guest posts to System
Merge branch 'master' of github.com:vanillaforums/Garden