Migration to Grails 2.4.x complete, fixes issue #16
Fixes runtime spring expression and issue #20
Further migration tweaks to Grails 2.4.x, more undefined classes to come
Sitemesh deprecated according to http://grails.org/doc/latest/guide/upgradingFrom23.html
Merge pull request #19 from brainstorm/grails_2.4.0_upgrade

Migration to Grails 2.4.x, fixes issue #16, #20 and others