Find and remove duplicate entries in csproj file
<p>We recently merged two branches of code and ended up with duplicate entries for several of the files in the .csproj file. This seemed to happen to all the files which needed the Copy to Output Directory to be changed to Copy always after that change was made and merged with the other branch.</p>

<p>I was wondering if this is going to cause any unexpected problems if it is left like this and what I should do to fix it. It's a lot of files so I don't want to go through and do it for each file manually. It is also not all of the files, but it is a significant number of files. What should I do?</p>