Maxthon 3.1.8.1000

# New Feature:
* Supported Shift + Right Click on a tab to open its menu once enabled "Right-click a tab to close it".
# Improvement:
* Improved the page compatibility of Webkit Core.
# Fixes:
* Main Frame
- No response when pressed ALT+CTRL+ESC.
- After clicked "Restore Defaults" in "Page Setting" of Options, the path of "Default Save Location" would disappear.
- One problem of locking tabs.
- Focus problem when resized Side Bar.
* Webkit Core
- Download window popuped when dragged some images in some pages.
- No "Copy" option in right-click menu when selected some text in pages.
* User Interface
- Problem of the enabling "Show Close Tab button on background tabs".
- Scrolling bar appeared if one URL was too long in Source Sniffer.
- The setting of Customize UI did not work for new windows.
* Smart Address Bar
- Opening a page from Address Bar always activated a new tab.
* Magic Fill
- Focus problem when chose to fill in the Magic Fill in its drop-down list.
* Thunder Downloader Module
- Language display problem when the first time used Maxthon Thunder Downloader in English OS.
- Thunder Downloader Module might crash when closed Maxthon browser.