A plus sign ('+') leads to http 404 errors.

How to verify: Use the /hudson/newView form to create a new view, enter a view
name containing '+' character. Try to access the view afterwards.

Observed behaviour:
Status Code: 404
Exception:
Stacktrace:
(none)

Expected behaviour: Either the correct view or an error message during view
creation.

Workarround: Manually replace the character '+' in the URL with the characters
'%2b'.