Update lib/ace/lib/useragent.js

Added detection for Internet Explorer 10 wrapper for Windows Store apps
Merge pull request #1179 from alizahid/patch-1

Update lib/ace/lib/useragent.js
Improve syntax highlighting of XQuery comments.
XQuery semantic highlighting improvements.
Minor improvements in xquery semantic highlighting.
Beautify XQuery highlighting rules.
Fix bug in the parser with XQDDF syntax.
Syntax highlighter improvements.
Improve syntax highlighting of cdata sections.
Fix highlighting of processing instructions.
Improve xqdoc highlighting.
Add support for eqname syntax.
Improvements in tag highlighting.
Minor improvements.
Add unicode support for ncname.
Revert buggy unicode support.
Fixes unicode ranges from xml names.
Merge pull request #1184 from wcandillon/master

XQuery Highlighter Improvements
Add keybinding selection to textarea bookmarklet
fix cursor in emacs mode