Spell check

1. 執行拼字檢查出現彈出視窗An error ....，log 檔出現 PHP Error:...。

   An error was encountered on the server. Please try again later.
   
   PHP Error: Spell check engine error: Unable to load Pspell engine for selected language
    in /usr/share/roundcubemail/program/steps/utils/spell.inc on line 50
   

2. 拼字檢查預設是使用 aspell，未解決前改成 googie 運作正常。

   [root@mail plugins]# vim /etc/roundcubemail/config.inc.php
   [root@mail plugins]# grep spellcheck_engine /etc/roundcubemail/config.inc.php$config
   ['spellcheck_engine'] = 'googie';