Moved application code to the Application layer

Imported Win10 project
Code cleanup
WIP - Use common UWP services for Win8.1 and Win10

ModernKeePass10/Views/UserControls/ColorPickerUserControl.xaml

@@ -0,0 +1,24 @@
+<UserControl x:Name="UserControl"
+    x:Class="ModernKeePass.Views.UserControls.ColorPickerUserControl"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    mc:Ignorable="d">
+    <ComboBox x:Name="ComboBox"
+            Width="350"
+            Height="35"
+            ItemsSource="{Binding Colors, ElementName=UserControl}" 
+            SelectionChanged="Selector_OnSelectionChanged" 
+            Loaded="ComboBox_Loaded" ItemContainerStyle="{StaticResource MainColorComboBoxItem}" 
+            Style="{StaticResource MainColorComboBox}">
+        <ComboBox.ItemTemplate>
+            <DataTemplate>
+                <StackPanel Orientation="Horizontal" Margin="0,0,10,0">
+                    <TextBlock Width="100" Text="{Binding ColorName}" Margin="0,0,10,0" />
+                    <Rectangle Width="100" Fill="{Binding ColorBrush}" />
+                </StackPanel>
+            </DataTemplate>
+        </ComboBox.ItemTemplate>
+    </ComboBox>
+</UserControl>