Change save to apply in SUI (#8082)

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## Summary of the Pull Request
Fixed the resizing bug where long text buttons get cut off, hid the unsaved changes warning, and changed "save" to "apply"

![MicrosoftTeams-image (1)](https://user-images.githubusercontent.com/48369326/97494176-2f1e5980-1923-11eb-8980-604bd5a067e5.png)

![image](https://user-images.githubusercontent.com/48369326/97494207-3a718500-1923-11eb-9409-7a95ecb50536.png)

<!-- Other than the issue solved, is this relevant to any other issues/existing PRs? --> 
## References
#1564 

<!-- Please review the items on the PR checklist before submitting-->
## PR Checklist
* [ ] Closes #xxx
* [ ] CLA signed. If not, go over [here](https://cla.opensource.microsoft.com/microsoft/Terminal) and sign the CLA
* [ ] Tests added/passed
* [ ] Documentation updated. If checked, please file a pull request on [our docs repo](https://github.com/MicrosoftDocs/terminal) and link it here: #xxx
* [ ] Schema updated.
* [x] I've discussed this with core contributors already. If not checked, I'm ready to accept this work might be rejected in favor of a different grand plan. Issue number where discussion took place: #xxx

<!-- Provide a more detailed description of the PR, other things fixed or any additional comments/features here -->
## Detailed Description of the Pull Request / Additional comments

<!-- Describe how you validated the behavior. Add automated tests wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed

src/cascadia/TerminalSettingsEditor/MainPage.xaml

@@ -123,10 +123,9 @@ the MIT License. See LICENSE in the project root for license information. -->
                 <Grid Height="100" Grid.Row="1">
                     <Grid.ColumnDefinitions>
                         <ColumnDefinition Width="*"></ColumnDefinition>
-                        <ColumnDefinition Width="200"></ColumnDefinition>
                     </Grid.ColumnDefinitions>
-                    <TextBlock x:Uid="Settings_UnsavedSettingsWarning" Grid.Column="0" Foreground="Goldenrod" FontSize="15" VerticalAlignment="Center" HorizontalAlignment="Left" TextAlignment="Left" Margin="30,0,0,0"/>
-                    <StackPanel Grid.Column="1" VerticalAlignment="Center" HorizontalAlignment="Right" Orientation="Horizontal" Margin="0,0,30,0">
+                    <TextBlock x:Uid="Settings_UnsavedSettingsWarning" Visibility="Collapsed" Foreground="Goldenrod" FontSize="15" VerticalAlignment="Center" HorizontalAlignment="Left" TextAlignment="Left" Margin="30,0,0,0"/>
+                    <StackPanel VerticalAlignment="Center" HorizontalAlignment="Right" Orientation="Horizontal" Margin="0,0,30,0">
                         <Button x:Uid="Settings_ResetSettingsButton" FontSize="15" ToolTipService.Placement="Mouse"/>
                         <Button x:Uid="Settings_SaveSettingsButton" FontSize="15" Style="{StaticResource AccentButtonStyle}" Margin="10,0,0,0"/>
                     </StackPanel>

src/cascadia/TerminalSettingsEditor/Resources/en-US/Resources.resw

@@ -1,17 +1,17 @@
 <?xml version="1.0" encoding="utf-8"?>
 <root>
-  <!--
-    Microsoft ResX Schema
-
+  <!-- 
+    Microsoft ResX Schema 
+    
     Version 2.0
-
-    The primary goals of this format is to allow a simple XML format
-    that is mostly human readable. The generation and parsing of the
-    various data types are done through the TypeConverter classes
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
     associated with the data types.
-
+    
     Example:
-
+    
     ... ado.net/XML headers & schema ...
     <resheader name="resmimetype">text/microsoft-resx</resheader>
     <resheader name="version">2.0</resheader>
@@ -26,36 +26,36 @@
         <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
         <comment>This is a comment</comment>
     </data>
-
-    There are any number of "resheader" rows that contain simple
+                
+    There are any number of "resheader" rows that contain simple 
     name/value pairs.
-
-    Each data row contains a name, and value. The row also contains a
-    type or mimetype. Type corresponds to a .NET class that support
-    text/value conversion through the TypeConverter architecture.
-    Classes that don't support this are serialized and stored with the
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
     mimetype set.
-
-    The mimetype is used for serialized objects, and tells the
-    ResXResourceReader how to depersist the object. This is currently not
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
     extensible. For a given mimetype the value must be set accordingly:
-
-    Note - application/x-microsoft.net.object.binary.base64 is the format
-    that the ResXResourceWriter will generate, however the reader can
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
     read any of the formats listed below.
-
+    
     mimetype: application/x-microsoft.net.object.binary.base64
-    value   : The object must be serialized with
+    value   : The object must be serialized with 
             : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
             : and then encoded with base64 encoding.
-
+    
     mimetype: application/x-microsoft.net.object.soap.base64
-    value   : The object must be serialized with
+    value   : The object must be serialized with 
             : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
             : and then encoded with base64 encoding.
 
     mimetype: application/x-microsoft.net.object.bytearray.base64
-    value   : The object must be serialized into a byte array
+    value   : The object must be serialized into a byte array 
             : using a System.ComponentModel.TypeConverter
             : and then encoded with base64 encoding.
     -->
@@ -661,10 +661,10 @@
     <value>Reset your settings to your previous save.</value>
   </data>
   <data name="Settings_SaveSettingsButton.Content" xml:space="preserve">
-    <value>Save</value>
+    <value>Apply</value>
   </data>
   <data name="Settings_UnsavedSettingsWarning.Text" xml:space="preserve">
     <value>⚠ You have unsaved changes.</value>
     <comment>{Locked="⚠"}</comment>
   </data>
-</root>
+</root>