changing 'empty_string_p' call to 'string equal x1 x2', rewording 'pointer' to 'object' to be more like tdom terminology and be less confusing as these are not real pointers, but tdom objects, and getting rid of unnecessary 'string trim' calls
Zen: Committing last catalog file on zen dev server that was not committed last week; Should be reviewed by someone though (maybe emma?) as there are a lot of changes and I'm not sure who did them.