JavaScript Support

Basic JavaScript Support has been added:
1. Code Highlighting Update
2. Stripped down version of Jurassic Parser (Ms-PL/jurassic.codeplex.com)
3. Syntax Error Reporting
4. Code Folding
5. Code Formatting based on JSBeautify
6. Go to Declaration Refractor Action

Other small enhancements, such as updated icon, caching, file template, etc.