it is now possible again to set the avatar width & height in dnn
fixed issue with wrong object qualifier
switchted to the recommended Automatic Package Restore
Re-designed install wizard (hello bootstrap), and more....

- Re-designed install wizard (hello bootstrap)
- automatic js/css minification/bundling during build
- nuget packages for most js libraries
- updated to latest jquery and jquery-ui versions
upgraded tinyMCE
fixed wrong path
added new cdn host settings
fixed #182 hovercards for twitter
missing files
readded nuget for the build scripts