Items that will be displayed in the future are visible instead of empty slots in Schedule block.

Steps to reproduce:
1. Create new Landing Page
2. Add one Schedule Block
3. Move timeline one week forward
4. Add an article
5. Publish

Expected:
1. Schedule block is empty, as I'm in "now" timestamp

Actual:
1. Schedule block is not empty

Please look at "schedule_block" attachment:

• timeline is set to "now, 30.06.2017", article will be added on 04.07.2017", but it's visible in the screen nevertheless.