Added support for code contracts (requires VS support!)

Implemented Contracts into existing classes (yet incomplete especially with Interface implementations in NavObject). Otherwise it basically works.
Started class for interfacing to finsql.exe.

NAV Source Control Test Host/App.config

@@ -1,6 +1,6 @@
-<?xml version="1.0" encoding="utf-8" ?>
+<?xml version="1.0" encoding="utf-8"?>
 <configuration>
     <startup> 
-        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" />
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1"/>
     </startup>
-</configuration>
+</configuration>

NAV Source Control Test Host/NAV Source Control Test Host.csproj

@@ -9,7 +9,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>NavScm.TestHost</RootNamespace>
     <AssemblyName>NAV Source Control Test Host</AssemblyName>
-    <TargetFrameworkVersion>v4.5.2</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
     <PublishUrl>publish\</PublishUrl>
@@ -27,6 +27,8 @@
     <IsWebBootstrapper>false</IsWebBootstrapper>
     <UseApplicationTrust>false</UseApplicationTrust>
     <BootstrapperEnabled>true</BootstrapperEnabled>
+    <TargetFrameworkProfile />
+    <CodeContractsAssemblyMode>0</CodeContractsAssemblyMode>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>
@@ -37,6 +39,49 @@
     <DefineConstants>DEBUG;TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
+    <CodeContractsEnableRuntimeChecking>True</CodeContractsEnableRuntimeChecking>
+    <CodeContractsRuntimeOnlyPublicSurface>False</CodeContractsRuntimeOnlyPublicSurface>
+    <CodeContractsRuntimeThrowOnFailure>False</CodeContractsRuntimeThrowOnFailure>
+    <CodeContractsRuntimeCallSiteRequires>False</CodeContractsRuntimeCallSiteRequires>
+    <CodeContractsRuntimeSkipQuantifiers>False</CodeContractsRuntimeSkipQuantifiers>
+    <CodeContractsRunCodeAnalysis>True</CodeContractsRunCodeAnalysis>
+    <CodeContractsNonNullObligations>True</CodeContractsNonNullObligations>
+    <CodeContractsBoundsObligations>True</CodeContractsBoundsObligations>
+    <CodeContractsArithmeticObligations>True</CodeContractsArithmeticObligations>
+    <CodeContractsEnumObligations>True</CodeContractsEnumObligations>
+    <CodeContractsRedundantAssumptions>True</CodeContractsRedundantAssumptions>
+    <CodeContractsAssertsToContractsCheckBox>True</CodeContractsAssertsToContractsCheckBox>
+    <CodeContractsRedundantTests>True</CodeContractsRedundantTests>
+    <CodeContractsMissingPublicRequiresAsWarnings>True</CodeContractsMissingPublicRequiresAsWarnings>
+    <CodeContractsMissingPublicEnsuresAsWarnings>False</CodeContractsMissingPublicEnsuresAsWarnings>
+    <CodeContractsInferRequires>True</CodeContractsInferRequires>
+    <CodeContractsInferEnsures>False</CodeContractsInferEnsures>
+    <CodeContractsInferEnsuresAutoProperties>True</CodeContractsInferEnsuresAutoProperties>
+    <CodeContractsInferObjectInvariants>False</CodeContractsInferObjectInvariants>
+    <CodeContractsSuggestAssumptions>False</CodeContractsSuggestAssumptions>
+    <CodeContractsSuggestAssumptionsForCallees>False</CodeContractsSuggestAssumptionsForCallees>
+    <CodeContractsSuggestRequires>False</CodeContractsSuggestRequires>
+    <CodeContractsNecessaryEnsures>True</CodeContractsNecessaryEnsures>
+    <CodeContractsSuggestObjectInvariants>False</CodeContractsSuggestObjectInvariants>
+    <CodeContractsSuggestReadonly>True</CodeContractsSuggestReadonly>
+    <CodeContractsRunInBackground>True</CodeContractsRunInBackground>
+    <CodeContractsShowSquigglies>True</CodeContractsShowSquigglies>
+    <CodeContractsUseBaseLine>False</CodeContractsUseBaseLine>
+    <CodeContractsEmitXMLDocs>False</CodeContractsEmitXMLDocs>
+    <CodeContractsCustomRewriterAssembly />
+    <CodeContractsCustomRewriterClass />
+    <CodeContractsLibPaths />
+    <CodeContractsExtraRewriteOptions />
+    <CodeContractsExtraAnalysisOptions />
+    <CodeContractsSQLServerOption />
+    <CodeContractsBaseLineFile />
+    <CodeContractsCacheAnalysisResults>True</CodeContractsCacheAnalysisResults>
+    <CodeContractsSkipAnalysisIfCannotConnectToCache>False</CodeContractsSkipAnalysisIfCannotConnectToCache>
+    <CodeContractsFailBuildOnWarnings>False</CodeContractsFailBuildOnWarnings>
+    <CodeContractsBeingOptimisticOnExternal>True</CodeContractsBeingOptimisticOnExternal>
+    <CodeContractsRuntimeCheckingLevel>Full</CodeContractsRuntimeCheckingLevel>
+    <CodeContractsReferenceAssembly>%28none%29</CodeContractsReferenceAssembly>
+    <CodeContractsAnalysisWarningLevel>0</CodeContractsAnalysisWarningLevel>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>