Messages with a MIME text/html MIME part will now be displayed with an
`HTML` button above them that will open another window and render the
HTML when clicked.
There is no sanitization performed, and inline attachment display is
not support.
This closes#2
Changes:
- Added a friendlyTime helper for nicer timestamps
- Added validation to most action methods
- Added error flash to several template files
- Now making use to c.RenderError() to handle action errors
- Removed message list slideUp() effect, takes too long
- Fixed a problem with my vim indentation configuration, so CSS and
HTML should be indented more consistently.
