Respect controller's Response.Status when action returns nil
Surround attachment filename in quotes
Merge pull request #548 from revel/fix-filename-spaces

Surround attachment filename in quotes
Moved session identifier to SHA256 hash made up of 16 random bytes taken from a cryptographically secure pseudorandom number generator
Merge pull request #552 from levigross/master

Replaced Session ID based on UUID with More Secure Version
Remove unnecessary sha256 of the session ID
Merge pull request #520 from opennota/response_status

Respect controller's Response.Status when action returns nil