updated contrib scripts to use darktable translation facilities

contrib/gimp.lua

@@ -69,7 +69,7 @@ local dt = require "darktable"
 local du = require "lib/dtutils"
 local df = require "lib/dtutils.file"
 local dtsys = require "lib/dtutils.system"
-local gettext = dt.gettext
+local gettext = dt.gettext.gettext
 local gimp_widget = nil
 
 du.check_min_api_version("7.0.0", "gimp") 
@@ -83,11 +83,8 @@ script_data.destroy_method = nil -- set to hide for libs since we can't destroy
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
 script_data.show = nil -- only required for libs since the destroy_method only hides them
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("gimp",dt.configuration.config_dir.."/lua/locale/")
-
 local function _(msgid)
-    return gettext.dgettext("gimp", msgid)
+    return gettext(msgid)
 end
 
 local function group_if_not_member(img, new_img)
@@ -119,7 +116,7 @@ local function gimp_edit(storage, image_table, extra_data) --finalize
   local gimp_executable = df.check_if_bin_exists("gimp")
 
   if not gimp_executable then
-    dt.print_error(_("GIMP not found"))
+    dt.print_error("GIMP not found")
     return
   end