I have tweaked the standard jelly template to display the current test results in a table, however I really want to be able to display diffs as seen in Jenkins own test results page.

For example:

```
JUnit Tests: 0 failures (±0) , 1 skipped (+1)

Package               Duration   Fail  (diff)  Skip  (diff)  Total  (diff)
foo.bar.baz              89 ms      0      0     1       +1     5       +2

```