gitignore for Intellij
cleanup naming:

* rename 'maven-hibernate-template' and 'maven_template' to 'tomcat-hibernate-clickstart'
* use groupId `local domain.localhost`
* this version is a snapshot, not a release
cleanup Hibernate configuration: we use a JNDI datasource, not the internal Hibernate pool.
Namning cleanup:
* GitHub repo `maven_template` has been renamed `tomcat-hibernate-clickstart`
*  Generated artifact `hibernate_basic_maven.war` has been renamed  `tomcat-hibernate-clickstart.war`