Update Children Policy Draft

Updated the content with example from Edmodo. Still need tweaking per OM.
Replaced "Services" with "Narrable"
Include COPPA 

Included COPPA paragraph from Edmodo example. Still need OM review.
Updated address
Added Social Networking Platforms
Removed excess characters
Added notice to school users

Also changed some formatting
Removed verbiage about advertisers
Added education components for review

Updated Privacy Link
Removed regulation limiting under 13 year old account
Added Teacher obligations
Added Teacher/Student account descriptions
Updated premium account descriptions
Formatting Updates
Update terms.md
Update terms.md
Update terms.md
Update terms.md
Update terms.md
Update terms.md
Update privacy.md
Update privacy.md
Update privacy.md
Update terms.md
Update privacy.md