Iter2

Push build cycle 2 up to front end branch. Preparing to push it master. 

In this update:
1. Updated dependencies to use most up to date version of Spring Boot.
2. Added Spring Mongo package as a dependency.
3. Changed data models
      - Dates are represented as long
      - Image is stored as a 64 bit encoded string
4. Controller class added to handle routes
5. Pointed database to use MongoLab remote database

To run this refresh gradle dependencies and run Application.java