Added Eclipse files to the Git Ignore.
  * They can be automatically generated in the Fenix Framework 2
  * Removed Eclipse configuration files from the repository
[Bennu Plugin] Refactoring
- Bumped bennu-plugin to version 2.0-SNAPSHOT.
- Removed ServiceAnnotationInjector invocation (It is removed in FenixFramework 2).
- Added lifecycle-mapping-metadata.xml in order to make Eclipse ignore the bennu-plugin targets.
[Bennu Project] Update to Fenix Framework 2
- Removed Log4J declaration
- Updated dml-maven-plugin to the correct version
- Added JVSTM/OJB and Logback dependencies for the War profile