Use grails test daemon for running tests inside IntelliJ

Since Grails 2.3 now has a test daemon to make running unit and integration tests much faster by keeping grails running, it would greatly speed up development if we could take advantage of that from inside IntelliJ. Currently, running tests inside IntelliJ require waiting for grails to start up and then run the tests. The only workaround I've found is to open a terminal window and run tests from there rather than IntelliJ, but that's defeating the purpose and still takes more work.

Being able to rapidly run unit tests is one of the founding principles of test driven design, so I hope you'll consider adding this to the upcoming IntelliJ 13 release.

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*Imported from [IDEA-113884](https://youtrack.jetbrains.com/issue/IDEA-113884) · Type: Feature · Votes: 3*
*Comments, attachments, dates and reporter are not part of the export — follow the link above for the full history.*

No files, tests, or entry points are named. Start by locating how this IntelliJ plugin launches Grails unit and integration tests, then investigate the Grails 2.3 test daemon and IntelliJ 13 test integration; done means both test types can run from IntelliJ while reusing the daemon.

Written by the indexing model from the issue text.