resolved #81: Make multi tenancy config const

Author: ismcagdas

src/AbpCompanyName.AbpProjectName.Core/AbpProjectNameConsts.cs

@@ -3,5 +3,7 @@
     public class AbpProjectNameConsts
     {
         public const string LocalizationSourceName = "AbpProjectName";
+
+        public const bool MultiTenancyEnabled = true;
     }
 }

src/AbpCompanyName.AbpProjectName.Core/AbpProjectNameCoreModule.cs

@@ -24,7 +24,7 @@ public override void PreInitialize()
             Configuration.Modules.Zero().EntityTypes.User = typeof(User);
 
             //Remove the following line to disable multi-tenancy.
-            Configuration.MultiTenancy.IsEnabled = true;
+            Configuration.MultiTenancy.IsEnabled = AbpProjectNameConsts.MultiTenancyEnabled;
 
             //Add/remove localization sources here
             Configuration.Localization.Sources.Add(

src/Tests/AbpCompanyName.AbpProjectName.Tests/MultiTenantFactAttribute.cs

@@ -6,8 +6,7 @@ public sealed class MultiTenantFactAttribute : FactAttribute
     {
         public MultiTenantFactAttribute()
         {
-            var multiTenancyConfig = System.Configuration.ConfigurationManager.AppSettings["MultiTenancyEnabled"];
-            if (multiTenancyConfig != null && multiTenancyConfig == "false")
+            if (!AbpProjectNameConsts.MultiTenancyEnabled)
             {
                 Skip = "MultiTenancy is disabled.";
             }