Create user mapper, entity, and service provider.
Extract traits from abstract mapper.
Use traits in user mapper.

Register service provider.
Add missing DocBlocks.
Inject dependencies into user mapper.

Add missing use statement.
Fix method signature to match parent.
Merge pull request #12 from synapsestudios/user-mapper-entity-services

User Services
add Zend\Stdlib for the benefit of Hydrators and HydratingResultSets
modify mappers to use hydrators and hydrating result sets
reorder DbStructure to fix constraint problems
use ircmaxell/password_compat until chef supports apache 2.4 and php 5.5
cs
general fixes to abstract mapper
oauth2 service provider shouldn't get things from  in register()
custom oauth2 pdo storage driver
integrate user implementation with oauth implementation (db structure needs some work still)
import ArrayObject
Merge branch 'master' into logging

Conflicts:
	composer.json
	composer.lock
	services.php