v.18.06.00: Add JaCoCo to Java Coverage Example (#14)

* Testing new Instrumentation

* Trying to get Coverage Reports working

* Trying a new approach

* Trying Again

* Re-adding Emma for Comparison

* Trying Again...

* Try Try Try Again

* Finally, It (Kinda) Works

Instead of doing Instrumentation the way Emma does, I am using on-demand instrumentation. It's better documented and (kinda) works. The corresponding changes involving libraries and filenames have not been added to Submitty yet, but I have tested this on my computer and it seems to work. I have not been able to test TestRunner specifically, but I did test running student tests through `org.junit.runner.JUnitCore` and it seemed to work fine.

* Other Fixes

This is so the new descriptions are accurate

* Trying to View Results

* modified the java coverage test to use show use of jacoco and emma

* replace tabs with spaces

generalize diff: replace myersDiffbyLinebyChar with diff

replace myersDiffbyLinebyChar with just diff

replace myersDiffbyLinebyChar with just diff

v0.92 Remove resource limits for submitty_count

Merge pull request #9 from Submitty/resource_limits_submitty_count

remove resource limits from submitty_count (now built in)

v0.91 Rename config directories

Merge pull request #8 from Submitty/rename_directories

move files to work with revised expected directory structure

v0.9: Merge pull request #7 from Submitty/loop_depth

Fix a typo in 07_loop_depth config.json