some ui fixes

src/JiraTimeBot.Ui/Views/SettingsPage.xaml

@@ -5,15 +5,26 @@
       xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
       xmlns:local="clr-namespace:JiraTimeBot.Ui"
       xmlns:xctk="http://schemas.xceed.com/wpf/xaml/toolkit"
+      xmlns:viewModels="clr-namespace:JiraTimeBot.Ui.ViewModels"
       mc:Ignorable="d" 
-      d:DesignWidth="250"
-      d:DesignHeight="300"
+      d:DataContext="{d:DesignInstance viewModels:SettingsViewModel}"
       >
-
-    <Grid>
+    <UserControl.Resources>
+        <ResourceDictionary>
+            <ResourceDictionary.MergedDictionaries>
+                <ResourceDictionary>
+                    <Style TargetType="TextBlock">
+                        <Setter Property="VerticalAlignment" Value="Center"></Setter>
+                    </Style>
+                </ResourceDictionary>
+                <ResourceDictionary Source="../Styles.xaml"/>
+            </ResourceDictionary.MergedDictionaries>
+        </ResourceDictionary>
+    </UserControl.Resources>
+    <Grid Width="250" Margin="5">
         <Grid.ColumnDefinitions>
-            <ColumnDefinition />
-            <ColumnDefinition />
+            <ColumnDefinition Width="Auto" />
+            <ColumnDefinition Width="*" />
         </Grid.ColumnDefinitions>
         <Grid.RowDefinitions>
             <RowDefinition Height="Auto"/>
@@ -92,6 +103,7 @@
             <CheckBox Content="Добавлять описание" />
         </StackPanel>
         <Button Grid.Row="11" Grid.Column="0" Grid.ColumnSpan="2" 
+                Command="{Binding Path=SaveSettingsCommand}"
                 Content="Сохранить"/>