[java.jsf] Use dependencies from Maven Central

- drop most of the dependencies
    we will need only java-deval and maven
- drop runscript
    mvn jetty:run is simpler
- drop spec file
    since we are not producing self-contained WAR file, having it
    packaged in RPM doesn't make much sense
[java.jsf] Update JSF assistant project

- Do not create uber-jar
- Do not produce executable WAR file
- Fix "Setting non-serializable attribute value into ViewMap" warning
- Move everything to org.devassistant.jsf namespace