Improve performance of check box dialogs by using ItemsRepeater instead of ItemsControl

Closes #181

app/Desktop/Dialogs/CheckBox/CheckBoxDialog.axaml

@@ -34,8 +34,8 @@
 
     <StackPanel Margin="20">
         <ScrollViewer MaxHeight="400">
-            <ItemsControl Items="{Binding Items}">
+            <ItemsRepeater Items="{Binding Items}">
-                <ItemsControl.ItemTemplate>
+                <ItemsRepeater.ItemTemplate>
                     <DataTemplate>
                         <CheckBox IsChecked="{Binding Checked}">
                             <Label>
@@ -43,8 +43,8 @@
                             </Label>
                         </CheckBox>
                     </DataTemplate>
-                </ItemsControl.ItemTemplate>
+                </ItemsRepeater.ItemTemplate>
-            </ItemsControl>
+            </ItemsRepeater>
         </ScrollViewer>
         <Panel Classes="buttons">
             <WrapPanel Classes="left">

app/Resources/Tracker/styles/controller.css

@@ -1,4 +1,4 @@
-#app-mount > div[class*="app-"] {
+#app-mount div[class*="app-"] {
   margin-bottom: 48px !important;
 }
 
@@ -8,6 +8,7 @@
   width: 100%;
   height: 48px;
   background-color: #fff;
+  z-index: 1000000;
 }
 
 #dht-ctrl button {

app/Resources/Tracker/styles/settings.css

@@ -7,7 +7,7 @@
   background-color: #000;
   opacity: 0.5;
   display: block;
-  z-index: 1000;
+  z-index: 1000001;
 }
 
 #dht-cfg {
@@ -20,7 +20,7 @@
   margin-top: -131px;
   padding: 8px;
   background-color: #fff;
-  z-index: 1001;
+  z-index: 1000002;
 }
 
 #dht-cfg-note {

app/Version.cs

@@ -7,6 +7,6 @@ using DHT.Utils;
 
 namespace DHT.Utils {
 	static class Version {
-		public const string Tag = "35.2.0.0";
+		public const string Tag = "35.3.0.0";
 	}
 }