Fixed handling of improper attachment URLs (BadRequest, either when no filename is specified, or when the filename ends with "/"). Closes #2490.
Fixed handling of improper attachment URLs (BadRequest, either when no filename is specified, or when the filename ends with "/"). Closes #2490.

git-svn-id: 0d96b0c1a6983ccc08b3732614f4d6bfcf9cbb42@2656 af82e41b-90c4-0310-8c96-b1721e28e2e2

rbaumg/trac,rbaumg/trac,rbaumg/trac,rbaumg/trac