Tambur.io fix

so far we haven't subscribed the stream and enabled presence when the site was loaded.
this will fix that and auto subscribes and enabled presence for the provided hash value. it no hash is provided we use 'davidbauer' to enable presence (without showing the links of 'davidbauer'). as a result for all other simultaneous instacurators 'davidbauer' appears in the list 'instacurated by others'