Maxthon 3.3.7.1000

# New Feature:
* Updated JavaScript engine.
# Fixes:
* Main Frame
- Side Bar and Status Bar could be dragged if the browser window was maximized.
- Quick App exited improperly.
- Sequence problem of the icons in Side Bar.
- Incorrect task number displayed in Download Manager.
- Tab "close" button display problem.
* Webkit Core
- Fixed one Inertia-Clickjacking security breach.
- Several stability problems related to Webkit Core.
- The username displayed as messy code in kyohk.net.
- Night Mode did not work in some sites.
- Some page loading problems.
- Two scroll bar problems.
* Extension Interface of IE Core
- Interface problem in Retro Mode.
* RSS
- Data import problem.