Updated references to xwt, md-addins
Updated reference to debugger-libs
[Ide] Fix icon for F# file mime type
Bump MD version
[NuGet] Change logging level for Add Packages dialog errors.

Use LogLevel.Info instead of LogLevel.Debug for errors when trying to
get packages from a package source. Using LogLevel.Info ensures that
the errors are logged by default whereas LogLevel.Debug are not
logged.
[UnitTest] Evaluating exception after Catchpoint is hit