* Make running test in Intellij work with JaCoCo
After the jacoco-maven-plugin was added, running test in IntelliJ fails
with the error "Could not find or load main class @{jacocoArgLine}".
Add a default IntelliJ configuration file so that running tests in the
IDE works with the jacoco-maven-plugin configuration and the
out-of-the-box developer experience is better. Other solutions described
in https://stackoverflow.com/q/24115142 (e.g., setting an empty
"jacocoArgLine" maven property) did not work.
* Add comment with link to PR