initial commit
Add beans for  services
Add generic smtp-conector
Add Exceptions for connector
Add services for authentication, email , an managament users .
Add smtp properties for connector .
Change import package for controller .
Add dependency java mail, change spring version .
Add bean configuration for mailing service .
ABNK-390 Create Database for mailing demo .
ABNK-391 Create JPA entities
ABNK-392 Create DAOs  for mailing DB .
ABNK-393 Add Shiro security layer
Add configuration for JPA
Add dependencies for shiro , mysql and  hibernate .
Modify controllers for using shiro authentication.
Delete configuration for properties file
Added Mailing Beans
Modified controller to link implement SendGrid java connector for
testing
pom change spring version and added sendgrid dependencies