[nautilus] batch-rename-dialog: Use better wording

[Carlos Soriano <csoriano src gnome org>]

commit 9db624072b1c6b44fb9633e3f490942ba02f613d
Author: Carlos Soriano <csoriano gnome org>
Date:   Fri Aug 18 14:48:49 2017 +0200

    batch-rename-dialog: Use better wording
    
    Nautilus was using "unallowed" which sounds odd and also "file name"
    when in reality can also be folders.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=771114

 src/nautilus-batch-rename-dialog.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/src/nautilus-batch-rename-dialog.c b/src/nautilus-batch-rename-dialog.c
index e3ad0bc..6f65350 100644
--- a/src/nautilus-batch-rename-dialog.c
+++ b/src/nautilus-batch-rename-dialog.c
@@ -1425,25 +1425,25 @@ have_unallowed_character (NautilusBatchRenameDialog *dialog)
     if (have_empty_name)
     {
         gtk_label_set_label (GTK_LABEL (dialog->conflict_label),
-                             _("A file must have a name."));
+                             _("Name cannot be empty."));
     }
 
     if (have_unallowed_character_slash)
     {
         gtk_label_set_label (GTK_LABEL (dialog->conflict_label),
-                             _("File names cannot contain “/”."));
+                             _("Name cannot contain “/”."));
     }
 
     if (have_unallowed_character_dot)
     {
         gtk_label_set_label (GTK_LABEL (dialog->conflict_label),
-                             _("A file cannot be called “.”."));
+                             _("“.” is not a valid name."));
     }
 
     if (have_unallowed_character_dotdot)
     {
         gtk_label_set_label (GTK_LABEL (dialog->conflict_label),
-                             _("A file cannot be called “..”."));
+                             _("“..” is not a valid name."));
     }
 
     if (have_unallowed_character_slash || have_unallowed_character_dot || have_unallowed_character_dotdot