Upgrade Grails version on both Grails-based applications to 4.0.0.RC2

Jun 22, 2019

Upgraded both Grails-based applications from 4.0.0.RC1 to 4.0.0.RC2. I generated blank Grails 4.0.0.RC1 and 4.0.0.RC2 apps and compared key files as necessary.

gradle.properties