added DB schema diagram
added jpa-relashion notes shell
fixed a few module names
updated relationship class examples
Merge branch 'working' of github.com:jcstaff/ejava-javaee into working
added schema image
Merge branch 'working' of github.com:jcstaff/ejava-javaee into working
added one-to-one section
added one-to-many sections
added relation characteristics
added collection identity
added composite Ids
added many to one
finished up relations and updated TODOs