ircmaxell/password_compat library added

This library is intended to provide forward compatibility with the password_* functions being worked on for PHP 5.5.
https://github.com/ircmaxell/password_compat
Box_Password class created as a wrapper of password_* functions
Box_Password unit tests created
Box_password added to Dependency Injector
setPass and getTempPass function removed from Model_Client

deprecated and not used!
authorizeClient() created

uses password_* functions wrapper (Box_Password) to authorize user
authorizeAdmin() created
sha1(pass) refactored to Box_Database::hashIt(pass)
password backward compatibility added

This should update existing user hashed password to new value at the login action.
unit tests updated
integration test updated
unit test updated
Finish Feature-improv-pass-hashing