Guarantee cwd for unit app, update naming scheme to stork standard

cd into the directory of the ```run_tests``` script. I'm bringing this script to where the stork script is. Do you need the 

```
echo $app_name >> test_results.log
```
 Line? It seems of little use to me. I've also dropped the ```--throw-on-error``` cmd line option, as this seems to be set in the executable. The unit tests run fine without it.