Added jwt, joda-time and commons-lang3 dependencies
Added named queries and dao calls for users
Changes in schema: password and display name should both be nullable
Added configuration for client secrets in yaml file and config class
Implemented POST /auth/facebook endpoint
Fixed ExampleAuthenticator so it compiles - may not need this class later
Added AuthFilter for /api/me resource
Merge pull request #74 from chena/dw-rest

Dropwizard implementation (WIP)