querydsl

Querydsl installed and initiated
QueryDsl

QueryDsl-Integration verbessert
QueryDSL ausgeklammert

SourceCode optimiert
deleted HelloResource
changes after sem1: changed resource name of consumable service from jee7-showcase to crm-demo, added interface javadoc, deleted unused parameter in findCustomers(...), adjusted POM compiler plugin java target to 1.7 (due to the maven eclipse kepler java 8 support bug)