Add catch for JsonException in GetBodyContent. (microsoft#4596) (micr…

…osoft#4597)

Fixes orchestrator x64 compilation and updates projects to use XUnit (m…

…icrosoft#4436) (microsoft#4439)

* Changes include
Removed x64 configuration from solution.
Updated Orchestrator project to only target x64 and added TODO notes in the csproj so we remember to remove these settings once we support Any CPU.
Removed redundant settings and packages from Orchestrator.csproj
Migrated orchestrator tests to XUnit.

* Added TODO to remember to change the TargetFramework to netstandard2.0 whenever possible.
Updated path to generate xml documentation

Merge pull request microsoft#3894 from microsoft/ccastro/adaptive-style

merge CheckForVersionChangeAsync()

Merge pull request microsoft#3564 from microsoft/tedlee/fix-oauth-cre…

…dentials (microsoft#3571)

[OAuth]do not set signInLink to empty when OAuthAppCredentials is set

[QnA Maker] No Match prompt removed and markdown support. (microsoft#…

…3121)

fix broken csproj reference.

Merge pull request microsoft#2649 from microsoft/ccastro/4.5

[cherry-pick] Certificate authentication: Enable cert auth and start the shift away from ICredentialProvider.

Updated Readme to reflect that master is now 4.6-preview

190618-01

2019-06-17-01