Add functionality for webtv

Taken from bitbucket.org/neutrino-images/ni-neutrino-hd

Required  build fixes:
    Clean cherry-pick was impossible and build was broken,
    because of missing parts of historie inside source repository.
    That forces to add many other missing code parts.

src/system/locals_intern.h

@@ -1552,6 +1552,7 @@ const char * locale_real_names[] =
 	"menu.hint_volume_pos",
 	"menu.hint_volume_size",
 	"menu.hint_webtv_setup",
+	"menu.hint_webtv_xml_auto",
 	"menu.hint_window_size",
 	"menu.hint_youtube_dev_id",
 	"menu.hint_youtube_enabled",
@@ -2593,7 +2594,10 @@ const char * locale_real_names[] =
 	"webtv.head",
 	"webtv.xml",
 	"webtv.xml.add",
+	"webtv.xml.auto",
 	"webtv.xml.del",
+	"webtv.xml.enter",
+	"webtv.xml.reload",
 	"window_size",
 	"wizard.initial_settings",
 	"wizard.install_settings",