Fix issue #60: Place OreAggregationAdder and its test in same package

The OreAggregationAdder and its corresponding test cases were in
different packages. This commit moves the test case into the same
package as the main class.

Author: cboehme

src/test/java/org/culturegraph/mf/stream/pipe/bib/OreAggregationAdderTest.java renamed to src/test/java/org/culturegraph/mf/stream/pipe/OreAggregationAdderTest.java

@@ -13,7 +13,7 @@
  *  See the License for the specific language governing permissions and
  *  limitations under the License.
  */
-package org.culturegraph.mf.stream.pipe.bib;
+package org.culturegraph.mf.stream.pipe;
 
 import org.culturegraph.mf.stream.pipe.OreAggregationAdder;
 import org.culturegraph.mf.test.TestSuite;