fixes for 5 issues

Last week we had a little grails hackathon at work. It all started with your  “A change to my Grails plugins” blog entry and after short discussion we decided to help cleaning up the resources plugin JIRA a little bit. We managed to fix a few issues:

    GPRESOURCES-50
    GPRESOURCES-135
    GPRESOURCES-184
    GPRESOURCES-183
    GPRESOURCES-116