[evolution] Use the fancy Unicode quotation marks in a new file

[Piotr Drąg <piotrdrag src gnome org>]

commit cea9ef925ea31599011ea6a89ba3e1d5fa180738
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Tue Jul 4 00:37:20 2017 +0200

    Use the fancy Unicode quotation marks in a new file
    
    Plus two forgotten arrows elsewhere.
    
    See https://developer.gnome.org/hig/stable/typography.html
    
    https://bugzilla.gnome.org/show_bug.cgi?id=774377

 ...g.gnome.evolution.text-highlight.gschema.xml.in |    4 ++--
 src/libemail-engine/mail-ops.c                     |    4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/data/org.gnome.evolution.text-highlight.gschema.xml.in 
b/data/org.gnome.evolution.text-highlight.gschema.xml.in
index d37c83d..a2938e6 100644
--- a/data/org.gnome.evolution.text-highlight.gschema.xml.in
+++ b/data/org.gnome.evolution.text-highlight.gschema.xml.in
@@ -2,8 +2,8 @@
   <schema gettext-domain="evolution" id="org.gnome.evolution.text-highlight" 
path="/org/gnome/evolution/text-highlight/">
     <key name="theme" type="s">
       <default>''</default>
-      <_summary>Theme name to use, defaults to 'bclear'</_summary>
-      <_description>Use 'highlight --list-scripts=themes' to get the list of installed themes and then the 
value to one of them. The change requires only re-format of the message part to take into effect, like using 
right-click->Format As->....</_description>
+      <_summary>Theme name to use, defaults to “bclear”</_summary>
+      <_description>Use “highlight --list-scripts=themes” to get the list of installed themes and then the 
value to one of them. The change requires only re-format of the message part to take into effect, like using 
right-click→Format As→....</_description>
     </key>
   </schema>
 </schemalist>
diff --git a/src/libemail-engine/mail-ops.c b/src/libemail-engine/mail-ops.c
index ee4b164..4237b39 100644
--- a/src/libemail-engine/mail-ops.c
+++ b/src/libemail-engine/mail-ops.c
@@ -145,7 +145,7 @@ em_filter_folder_element_exec (struct _filter_mail_msg *m,
                        error, local_error->domain, local_error->code,
                        _("Failed to filter selected messages. One reason can be that folder "
                        "location set in one or more filters is invalid. Please check your "
-                       "filters in Edit->Message Filters.\n"
+                       "filters in Edit→Message Filters.\n"
                        "Original error was: %s"), local_error->message);
                g_clear_error (&local_error);
        } else if (local_error)
@@ -735,7 +735,7 @@ mail_send_message (struct _send_queue_msg *m,
                                        err,
                                        _("Failed to apply outgoing filters. One reason can be that folder "
                                        "location set in one or more filters is invalid. Please check your "
-                                       "filters in Edit->Message Filters.\n"
+                                       "filters in Edit→Message Filters.\n"
                                        "Original error was: %s"), local_error->message);
                        } else {
                                g_string_append_printf (