bugfix: HtmlPurifier library updated（更新HtmlPurifier库）
bugfix: Sending emails fixed to avoid sending an email more than one time when receiving ‘mysql has gone away’ msg in the middle of the process.（修复发邮件可能会重复发送的问题）
bugfix: Security issue with cookies.（修复cookie安全问题）
bugfix: Issue in combine.php.
bugfix: Issue with report conditions with date comparisons.（修复报表日期比对条件问题）
bugfix: Fixed langs for es_es and es_la.
bugfix: Logs were not written for subtasks when trashing, untrashing, archiving and unarchiving tasks.
bugfix: Permissions issue at users history log.
bugfix: Tasks reports shows priority codes instead of showing prioriy names.
bugfix: Fixed: reminder didn’t use timezone in some cases.
bugfix: Class name removed from search results.
bugfix: File revisions in search results sometimes shows html code.
bugfix: When reporting objects with list custom properties only the first value was shown.
bugfix: When composing an email, fields to, cc and bcc not always select the email from the list if clicking it.
bugfix: Event creator appears twice in the email when other user accepted the invitation.
bugfix: Email signature does not change when composing an email and changing the from address.
bugfix: Issue with upload control when attaching a file that already exists in the system.
bugfix: Bug with CKEditor and Chrome when adding an image to a document.
bugfix: Checkbox were not cleared when reloading contact list.
bugfix: Issue when having more than one tab with Feng Office and viewing emails in each tab.
bugfix: Templates with assigned tasks are not shown properly at tasks widgets.
bugfix: Date format config handler is not initializing correctly for some values.
bugfix: Escape characters for report results.
bugfix: Issue with calendar reports.
bugfix: Issue with tasks widget in dashboard.
bugfix: Issue with milestone due dates in listing.
bugfix: Issue with conversation list permissions when viewing an email.
bugfix: LinkedObjectManager issue fixed.
system: CKEditor upgraded to version 3.5.1（CKEditor更新版本）
feature: Added APC cache for config options and other frequent objects.（添加频繁使用的对象的缓存功能）
feature: Added languages: Bulgarian, Suomi and Svenska.
feature: Upgraded languages: cs_cz, de_de, el_gr, it_it, ja_jp, nb_no, nl_nl, pl_pl, zh_cn.
feature: Improved the message for emails in outbox when logging in.（登录时已发邮件提示信息的优化）
feature: Added some indexes and improved parts of the code to improve performance.（添加索引，优化代码提升性能）
feature: Added more checks when sending emails.（添加更多发送邮件时的检查项）
feature: Performance improved for reminder and email pollings.（系统提醒和邮件投票的性能改进）
feature: Show label “Tags” when tags panel is collapsed.（标签面板关闭时显示“标签”文字）