during the databinding, failure to find a descriptor is an error.

Modified to assume UTF-8 if we fail to find it.

In this way we can keep both new and old happy.

Reordered operations in order to set the file modification time
after applying the permissions.

- IE 7 Standard
- IE Quirks

- If rendered in IE7 standard mode, whole cells are gray when mouse hovers.
- If rendered in IE8 and IE9 standard mode, there are glitchy lines on each
  cell.

[JENKINS-7494] Adding UserAvatarResolver to make it possible for plugins to add avatar images to user pages

    
There's already a plugin[1] which enables support for this, and it also
provides more configuration options. The user may not want to code the
'chrome=1' and thereby force CF for all installations. Also, the plugin
allows the install to send the CFInstall javascript launcher.
    
[1] https://wiki.jenkins-ci.org/display/JENKINS/Chrome+Frame+Plugin