Reporter test should use site root when checking version.

Adds site_root_path for cases when ThinkUp's not running at the top level path in its domain.
Handle new post pagination in Facebook graph API.

Updated testdata with new comments and page feeds from live graph explorer.
Update tests with new expected values.
Update crawler to look for pagination->next property rather than comments->count

Closes #1757, closes #1668
Docs: Clarify PHP code style guide
Merge pull request #1752 from anildash/1751_testofreporter_fails

Reporter test should use site root when checking version.
Set timezone to UTC in TestOfPostAPIController
Closes #1754