Upgrade gradle and fix tests
I thought I'd check this out and run it, but gradle immediately gave a cryptic error message. Googling suggested I upgrade Gradle, so I did. After fixing things here and there I found out that the tests were broken. The grammar and the tests do not match, so I fixed things in the grammar and in the tests. The plugin can now be built, tested, and run again.
Heh, cool. Could you also sign the contributors.txt file? thanks!
Okay, signed it!
I will have to wait for @bjansen to have time to review this as I've been out of the loop for too long. Sorry!
@bjansen, do you have time to review this RP?