LB-922: the posts published from Chained Blog are not published in timeline when Autoupdate=OFF

Fix chain timeline views lookup.
LB-922: the posts published from Chained Blog are not published in timeline when Autoupdate=OFF

Fix handling of deleted/unpublished posts.
Merge pull request #300 from petrjasek/lb-922-chain-timeline

Lb 922 chain timeline