starrt of statistics
Merge branch 'dev' into statistics

* dev: (26 commits)
  add the creating user as a member to the group
  updated schema
  removed measurement.modify media type
  added fixme
  seperated measurement time and creation time
  identifier in track list
  custom media types for sensors and phenomenons
  restructured track provider
  replaced users by user
  include measurement indentifier in JSON
  measurements provider
  identifier for measurements
  index for bbox
  license header
  measurement provider
  sensors provider
  phenomenons provider
  phenomenon provider
  deparameterized measurement value
  license headers
  ...

Conflicts:
	mongo/src/main/java/io/car/server/mongo/guice/MongoDaoModule.java
Merge branch 'dev' into statistics

* dev: (71 commits)
  verbose reponse 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
  made geometry factory transient
  fixed track parsing
  commented logging
  fixed measurements resource
  implemented tracks of a user
  log mapped exceptions
  ...
Merge branch 'dev' into statistics

* dev: (46 commits)
  some refactorings
  fixed test data script
  test data creation script
  changed encoding of measurement values (fixes #25)
  removed fixme
  encode error for invalid created responses
  validate schema files while building
  only encode references to other entities
  updated schemas with common definitions
  multibinding dependency for rest module
  load schema files with guice
  root schema
  root schema
  renamed schema factory
  disabled logging filter
  activated jersey logging filter
  removed auth annotation for GET methods
  fixed get measurement by id
  catch IAE for invalid ObjectIDs
  throw 404 for measurements that are not in the track
  ...

Conflicts:
	mongo/src/main/java/io/car/server/mongo/guice/MongoDaoModule.java
license headers
count statistics
added indexes
made mongo driver a direct dependency
measurement count is a long
implemented statistics dao
Merge branch 'dev' into statistics

* dev:
  possibility to disable validation
  merged redundant code
  removed schemata from providers
  moved schema validation to filter
Merge branch 'dev' into statistics

* dev:
  changed mail address
  fixed NPE for group members resource
  sorted constants
  path constants
  seperate schema prefix
  name and description for tracks
Merge branch 'dev' into statistics

* dev: (39 commits)
  added name & description to creation script
  removed obsolete json dependencies
  ported schema validation tests to jackson
  ported integration test to jackson
  fixed measurement parsing
  fixed measurement parsing
  do not encode null names/descriptions
  do not encode null names
  return 400 for invalid json
  marked servlet-api as provided
  fixed error encoding
  fixed tracks encoding
  fixed sensor href
  added measurements ref
  JsonNodeProvider
  fixed geojson tests
  adjusted measurement encoder
  adjusted encoder return type
  adjusted GeoJSON coder test
  adjusted provider module
  ...
Merge branch 'dev' into statistics

* dev:
  allow multiple integration tests
  formatting
  Update README.md
  added travis configuration

Conflicts:
	mongo/pom.xml
	mongo/src/main/java/io/car/server/mongo/entity/MongoMeasurement.java
Merge branch 'dev' into statistics

* dev:
  downgraded to jetty 7
moved classes to statistics package
statistics schema
additional json constants
statistics service
statistics providers