VAGExaminer: Finished Stage One of the Examiner Code

Functionality of Patient Search, Patient Create, List Patient Sessions
Updated User Identity Class to support database authentication
SiteController requires Login, Home is redirects to Patients Search
app()->session is used to pass the idPatient
while $_GET is used to pass firstname, lastname, birthday to actionCreate
Better Error Handeling for creating Patients
VAGDataCenter: Various improvment

Better date formatting, using afterFind and beforeValidate events handlers
Better error handling for creating patients