Implement created and updated fields
Remove redundant "this" in hashCode() and add Todo for 404 trigger in ArtworkOverviewController
Rename method
Change comment
Remove Spring version numbers and add XML header
Simplify messageSource definition
Add comment
Make some element sizes relative. Remove fixed width of article image.
Add 404 and 400 error handling
Route http error pages through security filter
Check duplicate picture files
Optimize duplicate picture detection; display error message when duplicate picture found
Add Javadoc
Update url to current picture in updateArtwork.jsp; extract common code
Change message