Do not show Add Package dialog on an unsupported project.
Do not show Add Package dialog on an unsupported project.

--HG--
extra : rebase_source : e186d8dd53da543ed067c05bf507ca842e467454

dolkensp/node.net,pratikkagda/nuget,atheken/nuget,GearedToWar/NuGet2,jmezach/NuGet2,indsoft/NuGet2,mrward/NuGet.V2,rikoe/nuget,jmezach/NuGet2,jholovacs/NuGet,pratikkagda/nuget,mono/nuget,RichiCoder1/nuget-chocolatey,GearedToWar/NuGet2,alluran/node.net,mono/nuget,mrward/nuget,RichiCoder1/nuget-chocolatey,OneGet/nuget,antiufo/NuGet2,oliver-feng/nuget,themotleyfool/NuGet,OneGet/nuget,GearedToWar/NuGet2,OneGet/nuget,oliver-feng/nuget,mrward/NuGet.V2,mrward/nuget,indsoft/NuGet2,mrward/nuget,pratikkagda/nuget,jholovacs/NuGet,dolkensp/node.net,jholovacs/NuGet,kumavis/NuGet,zskullz/nuget,antiufo/NuGet2,oliver-feng/nuget,xoofx/NuGet,jmezach/NuGet2,alluran/node.net,GearedToWar/NuGet2,xoofx/NuGet,kumavis/NuGet,alluran/node.net,pratikkagda/nuget,antiufo/NuGet2,dolkensp/node.net,alluran/node.net,mono/nuget,jmezach/NuGet2,oliver-feng/nuget,OneGet/nuget,RichiCoder1/nuget-chocolatey,mrward/NuGet.V2,oliver-feng/nuget,rikoe/nuget,antiufo/NuGet2,mrward/NuGet.V2,ctaggart/nuget,pratikkagda/nuget,ctaggart/nuget,GearedToWar/NuGet2,xoofx/NuGet,mrward/NuGet.V2,zskullz/nuget,xero-github/Nuget,atheken/nuget,xoofx/NuGet,pratikkagda/nuget,dolkensp/node.net,chocolatey/nuget-chocolatey,zskullz/nuget,xoofx/NuGet,mrward/NuGet.V2,indsoft/NuGet2,indsoft/NuGet2,themotleyfool/NuGet,akrisiun/NuGet,mrward/nuget,zskullz/nuget,chocolatey/nuget-chocolatey,RichiCoder1/nuget-chocolatey,akrisiun/NuGet,GearedToWar/NuGet2,jholovacs/NuGet,jmezach/NuGet2,chocolatey/nuget-chocolatey,chester89/nugetApi,chocolatey/nuget-chocolatey,mrward/nuget,rikoe/nuget,rikoe/nuget,antiufo/NuGet2,mrward/nuget,indsoft/NuGet2,chocolatey/nuget-chocolatey,mono/nuget,chocolatey/nuget-chocolatey,antiufo/NuGet2,chester89/nugetApi,oliver-feng/nuget,RichiCoder1/nuget-chocolatey,ctaggart/nuget,jmezach/NuGet2,anurse/NuGet,indsoft/NuGet2,jholovacs/NuGet,ctaggart/nuget,themotleyfool/NuGet,jholovacs/NuGet,anurse/NuGet,xoofx/NuGet,RichiCoder1/nuget-chocolatey