The commit for story 4 from sprint 4.

Summary: Now we merge sthe story 4

Test Plan: none

Reviewers: bmm, mic

Differential Revision: http://www.phabricator.loc/D17
The commit for story 4 from sprint 4.

Summary: Now we merge sthe story 4

Test Plan: none

Reviewers: bmm, mic

Reviewed By: bmm

Differential Revision: http://www.phabricator.loc/D17