Dns.GetHostAddressesAsync can return problematic results when passed an IP address, and if the connection string is already an IP address, we needn't call it anyway.

This prevents cookie confusion when applications are hosted at the same domain and path. For example, under default settings, WebMVC may attempt to decrypt Identity's antiforgery cookie rather than its own.

Fix issue multiple order creation. Now the create order button is disabled until the request is processed

#42 global exception handling

#39 Validation decorator integration

Fix bug BadRequest response  after creating order

IntegrationEventLogService refactoring

# Conflicts:
#	src/Services/Catalog/Catalog.API/Controllers/CatalogController.cs
#	src/Services/Catalog/Catalog.API/Startup.cs

Added Validation for orders and identified commands

Using some C#7 features

Replaced private set only used in ctor by readonly prop

Fix lifescope issue with IHttpClient
Adapt circuit breaker to trigger its counter for no success http response

Dns.GetHostAddressesAsync can return problematic results when passed an IP address, and if the connection string is already an IP address, we needn't call it anyway.