Gracefully handle mirror failures for offline scenarios (loic-sharma#448

)

Addresses loic-sharma#432

Address feedback (loic-sharma#343)

Addresses loic-sharma#341

[UI] Fix several bugs (loic-sharma#254)

[Protocol] Mirror nuget.org's undocumented protocols (loic-sharma#249)

NuGet.org uses RDF to generate its V3 API. This adds properties that aren't part of the official API, however, certain clients depend on these undocumented properties.

Add support for Google buckets storage (loic-sharma#233)

Add PostgreSql database provider (loic-sharma#228)

Allow switching between different versions (loic-sharma#210)

Polish BaGet's User Interface (loic-sharma#161)

Fix AmbiguousMatchException when deleting package (loic-sharma#177)

Fixes loic-sharma#176

Align AspNet versions; improve default experience