Replaced the tag implementation

The new implementation supports custom tags
which are provided by the user as well as
default tags which are provided by subsurface.
Default tags can be translated and will be written
to XML in their non-localized form.

Signed-off-by: Maximilian Güntner <maximilian.guentner@gmail.com>

main.cpp

@@ -24,6 +24,7 @@ int main(int argc, char **argv)
 
 	init_ui(&argc, &argv);
 	parse_xml_init();
+	taglist_init_global();
 
 	QStringList files;
 	QStringList importedFiles;