Log Message:
Update roundcube to 0.9.2.

RELEASE 0.9.2
-------------
- Fix image thumbnails display in print mode (#1489134)
- Fix height of message headers block (#1489108)
- Fix timeout issue on drag&drop uploads (#1489170)
- Fix default sorting of threaded list when THREAD=REFS isn't supported
- Fix list mode switch to 'List' after saving list settings in Larry skin (#1489164)
- Fix error when there's no writeable addressbook source (#1489162)
- Fix zipdownload plugin issue with filenames charset (#1489156)
- Fix so non-inline images aren't skipped on forward (#1489150)
- Fix "null" instead of empty string on messages list in IE10 (#1489145)
- Fix legacy options handling
- Fix so bounces addresses in Sender headers are skipped on Reply-All (#1489011)
- Fix bug where serialized strings were truncated in PDO::quote() (#1489142)
- Fix displaying messages with invalid self-closing HTML tags (#1489137)
- Fix PHP warning when responding to a message with many Return-Path headers \ 
(#1489136)
- Fix unintentional compose window resize (#1489114)
- Fix performance regression in text wrapping function (#1489133)
- Fix connection to posgtres db using unix socket (#1489132)
- Fix handling of comma when adding contact from contacts widget (#1489107)
- Fix bug where a message was opened in both preview pane and new window on \ 
double-click (#1489122)
- Fix fatal error when xdebug.max_nesting_level was exceeded in rcube_washtml \ 
(#1489110)
- Fix PHP warning in html_table::set_row_attribs() in PHP 5.4 (#1489094)
- Fix invalid option selected in default_font selector when font is unset (#1489112)
- Fix displaying contact with ID divisible by 100 in sql addressbook (#1489121)
- Fix browser warnings on PDF plugin detection (#1489118)
- Fix fatal error when parsing UUencoded messages (#1489119)