MRBS 1.7.1 release

Files at https://p.sf.net/mrbs/mrbs171

This is a bugfix release of MRBS.

Changes since MRBS 1.7.0:

• Fixed a few issues to do with session management, and date formatting.
• Added ability to restrict the domain of users authenticating via IMAP, useful
  for shared tenancy systems like Office 365 and Google Apps.
• Plus a few other bug fixes/improvements.

See NEWS or ChangeLog in the release for more details.

Enjoy!

John Beranek