升级到 MovableType 7.1.4

把本blog升级到最新版本的 MovableType 7.1.4， R4603。

从 r4601 升级到 r4603 更为简单，把安装包下载，上传到服务器，解压，覆盖原安装文件，然后登录后台，就自动验证升级成功了。

根据 SixApart 的官方说明，有不少的变化，有些还比较重要。

新特性和改进的功能

• [MTC-26731] Buttons are available in multiple-line field type of Contents Fields, the same as Entries.
• [MTC-26916] Center-Align and Right-Align buttons are available in Rich Text Editor of Content Fields.
• [MTC-25496] ContentSync Log is available.
• [MTC-26835] Improve the rebuild speed of ContentType and ContentData.
• [MTC-26404] Improve to treat plugins which have no schema version setting (Cloud only).
• [MTC-10937] Enable to clear history of ContentSync.
• [MTC-26316] "Sync all files" option is available at scheduled ContentSync.
• [MTC-26316] Send notification emails additionally to the user executing the sync process.
• [MTC-26496] Add Destination setting label.
• [MTC-26600] Enable to set SchwartzClientDeadline.
• [MTC-26544] Microsoft Edge is now supported in mt.cgi

部分更新的功能：

• [MTC-26933] TheSchwartz log mode is verbose in run-periodic-tasks by default.
• [MTC-26496] Improve the notification email of ContentSync.

后面还有一堆安全修正，和功能修复。