stored procs for creating post-order index

changes to .sln files

depth field migrations

correcting typos

fixing cursors

adding null value checks

Config: adding authentication support for new domains

Edit Unit tests doc

deleted unused specs

Finilizing ACS config

[Bugfix] Bugs #371, #425.

Details:
1. Bug #371. Authoring: Timeline's edit button changes its size disproportionately.
2. Bug #425. Authoring: Timeline can't save 'infinite' value.

Fix #566: Create artifact loads the wrong image

[Bugfix] Bug #385. Create timeline: Form: Date input looks not neatly.

[BugFix] Fix #606: Unexpected behaviour of edit form

Rerverting commit back

[Bugfix] #518 Added mark for required fields in forms

Authoring API tests

API tests update

db changes for progressive loading