[epiphany] Add missing mnemonics in Preferences dialog

[Michael Catanzaro <mcatanzaro src gnome org>]

commit e6d4c0d1041754d5f338857cd640f0901eaefbc4
Author: Jiro Matsuzawa <jmatsuzawa gnome org>
Date:   Sun Aug 17 12:04:06 2014 +0900

    Add missing mnemonics in Preferences dialog
    
    https://bugzilla.gnome.org/show_bug.cgi?id=734929

 src/resources/prefs-dialog.ui |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/resources/prefs-dialog.ui b/src/resources/prefs-dialog.ui
index 94b9ec0..7d8d199 100644
--- a/src/resources/prefs-dialog.ui
+++ b/src/resources/prefs-dialog.ui
@@ -657,7 +657,7 @@
                         </child>
                         <child>
                           <object class="GtkButton" id="manage_cookies_button">
-                            <property name="label" translatable="yes">Manage Cookies</property>
+                            <property name="label" translatable="yes">Manage _Cookies</property>
                             <property name="visible">True</property>
                             <property name="can_focus">True</property>
                             <property name="receives_default">False</property>
@@ -835,7 +835,7 @@
                         </child>
                         <child>
                           <object class="GtkButton" id="manage_passwords_button">
-                            <property name="label" translatable="yes">Manage Passwords</property>
+                            <property name="label" translatable="yes">Manage _Passwords</property>
                             <property name="visible">True</property>
                             <property name="can_focus">True</property>
                             <property name="receives_default">False</property>