Upgrade EPiServer from 4.61 tol 4.62

Now it's time to try to upgrade our EPiServer site! First bringing it up to 4.62 and after that to CMS 5.

First step went on with just a tiny problem "Failed to register ASP.NET client scripts on this site" that was quickly solved after following these instructions. In short: temporary rename the v3.0 and v3.5 folders in C:\WINDOWS\Microsoft.NET\Framework.

Now stepping on to the next greater level! Move to EPiServer CMS 5!