Fix indentation for 'Move class to File' function

'Move class to File' function did always use tab as indentation
character. As space user you always had to convert the tabs to spaces by
hand afterwards. This fix tries to find and set the right indentation
character. If no indentation character is found, it falls back to tab.
Fix some compiler warnings.
add support for Solution Format 12.00
Normalize newlines in *.cs
Add .NET 4.5.1 target framework.
Update NuGet to version 2.7.2

NuGet.Core version 2.7.41101.299
Fix project build error after installing Fody NuGet package.

The Fody NuGet package has an install PowerShell script that
directly updates the MSBuild project from the
Microsoft.Build.Evaluation.ProjectCollection.GlobalProjectCollection
to set a FodyPath property that defines where the Fody.targets
file should find the main Fody assembly.

Extended the support added for the Microsoft.Bcl.Build NuGet package
so project properties added by directly updating the MSBuild project
from the GlobalProjectCollection are added/updated in the actual
project file.

No support for updating properties that exist multiple times inside
a project (e.g. OutputPath).
Fix error when installing Fody addins with NuGet.

Implement EnvDTE ProjectItem.Save()
Support LocalPath property in an EnvDTE.ProjectItem.Properties.
Support LocalPath in EnvDTE.Project.Properties.
Fix error when installing MVVMLight NuGet package.

Append backslash to project directory name when returning
the full path from EnvDTE.Project.Properties.
Fixed SD-1931 - Dragging Pointer from toolbox to WPF designer throws exception.
Fix NuGet packages showing as installed in solution.

NuGet packages that were still in the packages folder but
not installed in any projects are now not shown in the
Installed tab when managing NuGet packages for the solution.
Fix old NuGet packages not being removed on updating.

Updating to a new NuGet package or installing a new NuGet
package with the old one still installed would leave the
old unused NuGet package in the packages folder.
Remove unused code.
Merge pull request #79 from gumme/WpfDesignerPointerBugFix

Fixed SD-1931 - Dragging Pointer from toolbox to WPF designer throws exception.
Don't crash if SideBarConfig.xml cannot be loaded.
Add PublicKeyToken, StrongName and Identity to EnvDTE.Reference

Used by Entity Framework 6
Fix error when installing EF.SharpDevelop NuGet package.

Enumerating the EnvDTE.Project.Object.References in a different app domain
was trying to load the PackageManagement assembly and failing. Changed
EnvDTE.References so it only exposes types in the SharpDevelop.EnvDTE assembly
and switch to using IEnumerable on the EnvDTE.References class.
Update Choc package for 4.4