Create utility class to fetch Spring beans

[ppodgorsek]

A utility class should be created to fetch Spring beans in an easy manner.

Currently, Spring beans can be fetched using:

Registry.getApplicationContext().getBean("userService")

While simple, this leads to the duplication of a lot of code and can become problematic if the bean name needs to be changed.

Instead, the utility class approach will allow to define the bean name in a single place and to fetch it using for example:

ApplicationContextUtils.getUserService()