Added lots of tests from Lib SelfTest.cs to Test project

Code cleanup in KeePassLib
Code cleanup in ModernKeePass.Tests
Argon2Kdf files can now be opened
WIP - Argon2kdf files are corrupted on write

ModernKeePass/Common/DatabaseHelper.cs

@@ -4,6 +4,7 @@ using Windows.UI.Xaml.Controls;
 using ModernKeePass.ViewModels;
 using ModernKeePassLib;
 using ModernKeePassLib.Cryptography.Cipher;
+using ModernKeePassLib.Cryptography.KeyDerivation;
 using ModernKeePassLib.Interfaces;
 using ModernKeePassLib.Keys;
 using ModernKeePassLib.Serialization;
@@ -118,7 +119,8 @@ namespace ModernKeePass.Common
         /// </summary>
         public void Save()
         {
-            if (_pwDatabase == null || !_pwDatabase.IsOpen) return;
+            // TODO: Save is disabled for now for Argon2Kdf because it corrupts DB (read works)
+            if (_pwDatabase == null || !_pwDatabase.IsOpen /*|| KdfPool.Get(_pwDatabase.KdfParameters.KdfUuid) is Argon2Kdf*/) return;
             _pwDatabase.Save(new NullStatusLogger());
         }
 

ModernKeePass/ModernKeePass.csproj

@@ -352,7 +352,6 @@
       <Name>ModernKeePassLib</Name>
     </ProjectReference>
   </ItemGroup>
-  <ItemGroup />
   <PropertyGroup Condition=" '$(VisualStudioVersion)' == '' or '$(VisualStudioVersion)' &lt; '12.0' ">
     <VisualStudioVersion>12.0</VisualStudioVersion>
   </PropertyGroup>