Schema ID's
json schema dependencies
validator interface
fixed pasted code
validation exception handling
json validator
test for application/json media type
license headers
missing annotation
moved provider to own class
imports
add the schema to incoming content types
added request and response validation
Merge branch 'validation' into dev

* validation:
  added request and response validation
  add the schema to incoming content types
  imports
  moved provider to own class
  missing annotation
  license headers
  test for application/json media type
  json validator
  validation exception handling
  fixed pasted code
  validator interface
  json schema dependencies
  Schema ID's