[bd] API 1.4.7

• supported latest OAuth 2.0 rfc with new grant types: implicit, client credentials and jwt bearer
• added demo client for first time installation
• added security feature: restrict access (AdminCP option)
• added security feature: white listed domains for client
• added pubsubhubbub support: user data, alerts and posts
• added GET /navigation
• added GET /users/find
• added PUT /users/:userId
• added POST /oauth/token/admin
• added support for social login
• added support for user groups
• added support for alerts
• added support for profile posts
• added support for forum watch
• improved support for conversation
• improved support for searching
• improved performance
• fixed bugs