Sort results of JavaSearch command using a new Eclim setting.

Setting name: org.eclim.java.search.sort

Testing:
- Updated WorkspaceSettings
org.eclim.java.search.sort=["src/main", "src/test"]

- Ran :JavaSearch and verified that the main code is listed before test.
- Tested with just "src/test" and the main code was listed in the end.
- Tested with empty list and the results were interleaved.