[gnome-music] Add mnemonics where applicable

[Marinus Schraal <mschraal src gnome org>]

commit 54dc2253d814696a4d86ba563e03ed2d6118118f
Author: Marinus Schraal <mschraal src gnome org>
Date:   Fri Sep 23 16:16:00 2016 +0200

    Add mnemonics where applicable

 data/PlaylistDialog.ui   |    9 ++++++---
 data/SelectionToolbar.ui |    6 ++++--
 data/headerbar.ui        |    3 ++-
 3 files changed, 12 insertions(+), 6 deletions(-)
---
diff --git a/data/PlaylistDialog.ui b/data/PlaylistDialog.ui
index f22b82c..71de7d0 100644
--- a/data/PlaylistDialog.ui
+++ b/data/PlaylistDialog.ui
@@ -8,7 +8,8 @@
     <property name="title">Select Playlist</property>
     <child>
       <object class="GtkButton" id="cancel-button">
-        <property name="label" translatable="yes">Cancel</property>
+        <property name="label" translatable="yes">_Cancel</property>
+        <property name="use_underline">True</property>
         <property name="visible">True</property>
         <property name="can_focus">False</property>
         <property name="receives_default">False</property>
@@ -19,7 +20,8 @@
     </child>
     <child>
       <object class="GtkButton" id="select-button">
-        <property name="label" translatable="yes">Add</property>
+        <property name="label" translatable="yes">_Add</property>
+        <property name="use_underline">True</property>
         <property name="visible">True</property>
         <property name="can_focus">False</property>
         <property name="receives_default">False</property>
@@ -109,7 +111,8 @@
                 </child>
                 <child>
                   <object class="GtkButton" id="new-playlist-button">
-                    <property name="label" translatable="yes">Add</property>
+                    <property name="label" translatable="yes">_Add</property>
+                    <property name="use_underline">True</property>
                     <property name="visible">True</property>
                     <property name="sensitive">False</property>
                     <property name="can_focus">True</property>
diff --git a/data/SelectionToolbar.ui b/data/SelectionToolbar.ui
index 84d3934..b889df7 100644
--- a/data/SelectionToolbar.ui
+++ b/data/SelectionToolbar.ui
@@ -6,7 +6,8 @@
     <property name="can_focus">False</property>
     <child>
       <object class="GtkButton" id="button1">
-        <property name="label" translatable="yes">Add to Playlist</property>
+        <property name="label" translatable="yes">_Add to Playlist</property>
+        <property name="use_underline">True</property>
         <property name="visible">True</property>
         <property name="can_focus">True</property>
         <property name="receives_default">True</property>
@@ -17,7 +18,8 @@
     </child>
     <child>
       <object class="GtkButton" id="button2">
-        <property name="label" translatable="yes">Remove from Playlist</property>
+        <property name="label" translatable="yes">_Remove from Playlist</property>
+        <property name="use_underline">True</property>
         <property name="visible">True</property>
         <property name="can_focus">True</property>
         <property name="receives_default">True</property>
diff --git a/data/headerbar.ui b/data/headerbar.ui
index 9667dec..a38f192 100644
--- a/data/headerbar.ui
+++ b/data/headerbar.ui
@@ -109,7 +109,8 @@
         <property name="visible">False</property>
         <property name="no_show_all">True</property>
         <property name="can_focus">False</property>
-        <property name="label" translatable="yes">Cancel</property>
+        <property name="label" translatable="yes">_Cancel</property>
+        <property name="use_underline">True</property>
         <property name="valign">center</property>
         <property name="sensitive">True</property>
         <style>