Misc fixes.

src/com/gitblit/utils/JGitUtils.java

 		}
 		fetch.setRefSpecs(specs);
 		FetchResult result = fetch.call();
-		repository.close();
 		return result;
 	}
 
 
 	/**
 	 * Determine if a repository has any commits. This is determined by checking
-	 * for 1 or more heads.
+	 * the objects/info and objects/pack folders.
 	 * 
 	 * @param repository
 	 * @return true if the repository has commits

tests/com/gitblit/tests/ByteFormatTest.java

 	public void testByteFormat() throws Exception {
 		ByteFormat format = new ByteFormat();
 		assertTrue(format.format(10).equals("10 b"));
-		assertTrue(format.format(1024 * 10).equals("10.0 KB"));
-		assertTrue(format.format(1024 * 1000).equals("1,000.0 KB"));
+		assertTrue(format.format(1024 * 10).equals("10 KB"));
+		assertTrue(format.format(1024 * 1000).equals("1,000 KB"));
 		assertTrue(format.format(2 * 1024 * 1000).equals("2.0 MB"));
 		assertTrue(format.format(1024 * 1024 * 1000).equals("1,000.0 MB"));
 		assertTrue(format.format(2 * 1024 * 1024 * 1000).equals("2.0 GB"));