Merge pull request #4 from cemrich/master

UI- and performance improvements
new gitignoer to remove ncrunchfiles
Merge branch 'master' of github.com:chrissie1/chocolatey-Explorer
Created service for obtaining the full list of available packages from the chocolatey api-feed. This is a basic version and has to be performance optimized.
Improved performance while loading all available packages a lot by using a thread pool.
Small hack to avoid loading all installed packages from disk too often.
Performance improvement for web requests as suggested here: http://stackoverflow.com/questions/1292637/httpwebrequest-runs-slowly-first-time-within-sqlclr
Replaced package list with data grid to show more information and options.
- fixed cache invalidation bug
- (un)installation of packages now inside package list possible
- promt before uninstalling any package
Enabled keyboard navigation inside package list. Typing the first letter of an package will scroll the list to this item.