Log Message:
Update roundcube to 0.8.5.

CHANGELOG Roundcube Webmail
===========================

- Fix #countcontrols issue in IE<=8 when text is very long (#1488890)
- Fix unwanted horizontal scrollbar in message preview header (#1488866)
- Add workaround for IE<=8 bug where Content-Disposition:inline was ignored
  (#1488844)
- Fix XSS vulnerability in vbscript: and data:text links handling (#1488850)
- Fix absolute positioning in HTML messages (#1488819)
- Fix keybord events on messages list in opera browser (#1488823)
- Fix cache (in)validation after setting \Deleted flag
- Fix selection of collapsed thread rows (#1488772)
- Fix wrapping of quoted text with format=flowed (#1488177)