Updated to .net core 2.0

Author: HeyJoel

build.cake

@@ -47,7 +47,7 @@ Task("Patch-Assembly-Version")
 
     Information("Building version {0} of Cofoundry.", versionInfo.InformationalVersion);
 
-    isPrerelease = !string.IsNullOrEmpty(versionInfo.PreReleaseNumber);
+    isPrerelease = versionInfo.PreReleaseNumber.HasValue;
 
     // Patch the version number so it's picked up when dependent projects are references
     // as nuget dependencies. Can't find a better way to do this.

src/Cofoundry.Plugins.BackgroundTasks.Hangfire/Cofoundry.Plugins.BackgroundTasks.Hangfire.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netstandard1.6</TargetFramework>
+    <TargetFramework>netstandard2.0</TargetFramework>
 
     <PackageId>Cofoundry.Plugins.BackgroundTasks.Hangfire</PackageId>
     <Description>Hangfire implementation of Cofoundry.Core.BackgroundTasks.</Description>
@@ -15,7 +15,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Cofoundry.Web" Version="0.2.0-beta0004" />
-    <PackageReference Include="Hangfire" Version="1.6.14" />
+    <PackageReference Include="Cofoundry.Web" Version="0.2.0-beta0056" />
+    <PackageReference Include="Hangfire" Version="1.6.17" />
   </ItemGroup>
 </Project>

src/Cofoundry.Plugins.BackgroundTasks.Hangfire/HangfireDashboardAuthorizationFilter.cs

@@ -17,7 +17,7 @@ public bool Authorize([NotNull] DashboardContext context)
             // Hangfire does not support async auth:
             // https://github.com/HangfireIO/Hangfire/issues/827
             var userContext = service
-                .GetCurrentContextAsync()
+                .GetCurrentContextByUserAreaAsync(CofoundryAdminUserArea.AreaCode)
                 .ConfigureAwait(false).GetAwaiter().GetResult();
 
             return userContext.IsCofoundryUser();