Merge pull request #230 from CruGlobal/MH-752

Return child organizations in APIv1
show white-space in feed_item_comment's
Consider organization.show_sub_orgs for organizational_roles of APIv1
Merge pull request #231 from CruGlobal/MH-752

Consider organization.show_sub_orgs for organizational_roles of APIv1
Temporarily disable the sub-orgs for APIv1
Add Text Subscribe and Unsubcribe feature
Fix conflicts after merging MH-771 to dev