updates to project files to find nuget packages

When I configure and build in the "monodevelop" directory, from a clean git clone, I get build failures due to assemblies from nuget packages not being found.

The two diffs like this one fix that:  https://github.com/dsyme/fsharpbinding/compare#diff-b8bb351689192a64376387b545148343L68

It also normalizes the project files in the way VS2013 does automatically, I thnk harmlessly