Use bibtex for year, too
Do not die if no document supplied
Do not log out when clicked on Home
Add labels to registration fields
Check for e-mail not being empty
Check for email and username is already in use
Remove leading and trailing whitespaces on register
Fix tagging on details page
Remove debugging output
Show error message when adding to a nonexistent group
Show error message when invalid user was entered
Make error messages shiny
Remove search
Remove image from upload button