Bug fix and better error handling in workflows

Fixed an error where MediumContents was not updated with their new
versions.

Fixed an error where a workflow crashed when it was updated while having
categories attached

Improved the invalid action view to include links to currently valid actions
Merge
Merge branch 'workflow-error-recovery' of git://github.com/stenbacka/infoglue2 into stenbacka-workflow-error-recovery
If-modified-logic as well as config possibilities to interceptors
Merge branch 'master' of github.com:bogeblad/infoglue2

Conflicts:
	src/java/org/infoglue/cms/applications/PresentationStrings_en.properties
	src/java/org/infoglue/cms/applications/PresentationStrings_fr.properties
	src/java/org/infoglue/cms/applications/PresentationStrings_sv.properties
New ignores