added .Net 4.5 link

sometimes the installer won't install unless they have .NET 4 Full installed. 
Merge pull request #9 from ianmorris101/master

CSS for adding subaccount-specific help links
merged changes
Merge pull request #4 from ejlax/patch-2

added .Net 4.5 link
Merge branch 'master' of git://github.com/kajigga/canvas-contrib