WIP: Refactoring UI for problem reports.
Merge branch 'master' into delete-via-arrow

Conflicts:
	grails-app/controllers/bn/elicitator/ElicitController.groovy
	grails-app/taglib/bn/elicitator/VariableTagLib.groovy
	grails-app/views/elicit/index.gsp
More work on delete-via-arrows instead of buttons
Updated TODO with more comments, changed 'potential problems' to 'alternative explanations'.
Merge branch 'delete-via-arrow'
Added comment about the algorithm used for sorting the dag during netica output.