Massiv refactoring of the complete backend. What was done so far:

- Added generic wrapper classes like
-- CloudFoundryResource
-- CloudFoundryResources
-- CloudFoundryMetadata

- Removed all repositories and added one central generic repository:
- RestRepositories

- Added Service/ServicePlan Mappings
- Refactored JSON Structure

- Added:
-- Domain
-- Event
-- EventMetadata
-- EventRwuest
-- Frameworks
-- QuotaDefinition
-- Runtime