Add missing JavaScript highlighting colors in options dialog.
Add text examples to CSS syntax highlighting.
Add SharpDevelop user agent in NuGet feed requests.
Use NuGet-Operation install HTTP header when adding packages from dialog.
Use NuGet-Operation update HTTP header when updating packages from dialog.
Use NuGet-Operation install HTTP header when manage packages button used.
Use NuGet-Operation install HTTP header when using Install-Package cmdlet.
Use NuGet-Operation update HTTP header when using Update All button.
Refactor package management unit tests.
Use NuGet-Operation update HTTP header when using Update-Package cmdlet.
Fix unhandled exception dialog being shown when refresh web reference fails.
Merge pull request #52 from jogibear9988/master

Fixes / Extensions for XAML Designer
fix some issues:
- formatting and indentation in some files
- do not catch and mute all exceptions in some cases
- use RhinoMocks to mock required services in tests