Added basic DELETE,GET,POST,PATCH,PUT to doc in collections
Added cursor support to execute AQL queries
private
Remake session and database. Added Edge support
Some simple queries -
Merge branch 'f-crud' into dev

* f-crud:
  Some simple queries -
  Remake session and database. Added Edge support
  private
  Added cursor support to execute AQL queries
  Added basic DELETE,GET,POST,PATCH,PUT to doc in collections
added model interface - validation and hooks
database test - model
Merge branch 'f-model' into dev

* f-model:
  database test - model
  added model interface - validation and hooks