[evolution] Revert certain parts from commit for bug #635738

[Milan Crha <mcrha src gnome org>]

commit 4e42a9aee8c5f030afe228d3a2a1796c6a7d4028
Author: Milan Crha <mcrha redhat com>
Date:   Mon Nov 29 10:24:23 2010 +0100

    Revert certain parts from commit for bug #635738

 mail/e-mail-reader.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/mail/e-mail-reader.c b/mail/e-mail-reader.c
index 6a96afd..59cc406 100644
--- a/mail/e-mail-reader.c
+++ b/mail/e-mail-reader.c
@@ -3210,7 +3210,7 @@ mail_reader_update_actions (EMailReader *reader,
 	gtk_action_set_sensitive (action, sensitive);
 
 	action_name = "mail-next-important";
-	sensitive = single_message_selected && !last_message_selected;
+	sensitive = single_message_selected;
 	action = e_mail_reader_get_action (reader, action_name);
 	gtk_action_set_sensitive (action, sensitive);
 
@@ -3220,7 +3220,7 @@ mail_reader_update_actions (EMailReader *reader,
 	gtk_action_set_sensitive (action, sensitive);
 
 	action_name = "mail-next-unread";
-	sensitive = any_messages_selected && !last_message_selected;
+	sensitive = any_messages_selected;
 	action = e_mail_reader_get_action (reader, action_name);
 	gtk_action_set_sensitive (action, sensitive);
 
@@ -3230,12 +3230,12 @@ mail_reader_update_actions (EMailReader *reader,
 	gtk_action_set_sensitive (action, sensitive);
 
 	action_name = "mail-previous-important";
-	sensitive = single_message_selected && !first_message_selected;
+	sensitive = single_message_selected;
 	action = e_mail_reader_get_action (reader, action_name);
 	gtk_action_set_sensitive (action, sensitive);
 
 	action_name = "mail-previous-unread";
-	sensitive = any_messages_selected && !first_message_selected;
+	sensitive = any_messages_selected;
 	action = e_mail_reader_get_action (reader, action_name);
 	gtk_action_set_sensitive (action, sensitive);