[SUPER] Mms bringup

* Add SMS template.
* Add QuickMessage along with privacy mode.
* Add unicode stripping.
* Add TimeStamps.
* Add mark as unread.
* Add ability to add SMS to calendar.
* Add split SMS.
* Add delay SMS sending.
* Add checkbox receipients picker.
* Add user configurable enter key action on SMS typing.
* Add ability to expand text input field upto 6 lines.
* Add ability to select audio file from external storage.
* Remove an 1 second delay on message view displaying.
    (no longer needed for Android 4.3+)
* Fix inconsistent back button behavior.
* Fix null pointer expection when Phone is in low memory.
* Fix message type MMS/SMS not displayed properly.
* Fix slideshow can't be shown in the message.
* Fix process stops after sharing a video through message.

[重量级] Mms跟进

* 添加短信模板.
* 添加快捷短信以及隐私模式.
* 添加统一码分离替换.
* 添加时间戳.
* 添加标记为未读.
* 添加将短信加入日历.
* 添加短信分隔.
* 添加取消发送短信延时.
* 添加群发短信时的接收人勾选框.
* 添加输入短信时用户可配置的回车键操作.
* 添加可将短信输入框展开至6行.
* 添加可从外部储存选取声音文件.
* 移除短信显示时的1秒的延时.
    (Android 4.3+ 不再需要此延时)
* 修复返回键操作的处理.
* 修复电话低内存状态时的NPE.
* 修复短信类型(彩信/短信)显示错误.
* 修复短信中幻灯片无法显示的问题.
* 修复在通过短信分享视频后进程停止.

Thanks to their respective authors for these implementations.
感谢这些特性的各自的作者.