Upgrading to work with Grail 2.2.4 and Groovy 2.1

I took the following steps:
* Quit GGTS
* Downloaded and installed latest JDK from oracle
* Updated JAVA_HOME 
export JAVA_HOME=$(/usr/libexec/java_home)
* Installed a new GGTS (version 3.4) by downloading directly from spring
source
* Set my GRAILS_HOME to be the 2.2.4 installation
* Open GGTS
* Installed the Groovy 2.1 Compiler for Groovy Eclipse
* In preferences did the following:
  - Groovy -> Compiler -> Switched to using compiler 2.1 instead of 2.0
  - Groovy -> Grails -> Added my 2.2.4 installation
  - Groovy -> Grails -> Grails Launch -> Unchcked "Keep external Grails
running" (see
http://stackoverflow.com/questions/19182764/cannot-create-grails-projects-in-sts-but-from-command-line
and https://issuetracker.springsource.com/browse/STS-3277 )