Add content none option to dependencies file

[forki]

After discussing #193

This option will disable the install of any content files.

We need to touch:

• Parser/Serializer of DependenciesFile needs to handle this option (incl. test)
• Parser/Serializer of LockFile needs to handle this option (incl. test)
• Disable the install (propably easiest part)

It's very similar to references strict (see also http://fsprojects.github.io/Paket/nuget-dependencies.html#Strict-references) - so I think it's a perfect up-for-grabs issue.

Any volunteers?

[forki]

As @thinkbeforecoding suggested we could do this with something like a .gitignore by giving glob path of content files to avoid to import

that sounds nice

[thinkbeforecoding]

It seems that there's code to parse globs in Fake..

The question then is the syntax to specify those ignore in the paket.dependencies file.

[theimowski]

What are the examples of NuGet packages that contain both lib and content? Are there any, excluding those that won't pass the content blacklist? If not then maybe the content none is not applicable as one would simply not add NuGet packages with content files

[agross]

I don't know any packages with lib and content, but I guess there might be some. Given that such packages might pop up any day, I think it's best to check content separately from libs.

[ctaggart]

I gave an example when commenting on #193. It is an indirect dependency:

    FSharp.Data.SqlClient (1.3.5-beta)
      Microsoft.SqlServer.Types (>= 0)