WIP strings in ressource file (XAML is done, code-behind is not)

Invalid URI now shows a message
Create entry is now a link above entries
Entries gridview allows reordering (WIP enable it conditionnally)
Code cleanup in adding/removing PwEntries from VM

ModernKeePass/ModernKeePassApp.csproj

@@ -210,6 +210,7 @@
     <None Include="packages.config">
       <SubType>Designer</SubType>
     </None>
+    <PRIResource Include="Strings\en-US\Resources.resw" />
   </ItemGroup>
   <ItemGroup>
     <None Include="Package.StoreAssociation.xml" />