HV-725 Chapter 1 updates - describing EL and CDI PE dependencies, making logging a sub section

Adding docs exmaple to source directory
HV-725 Chapter 3 updates - adding examples to source tree and updating docs.
HV-725 Chapter 2 updates - creating a new group chapter. Moving examples into source tree. Updating chapter 3 examples.
HV-725 Adding description of cross-parameter constraints