Gelencsér Szabolcs / cloud

also fix add a hash function to check whether we should
update the activity feed

Closes #230

- some leftover comment/hr
- also those margins made the boxes on index jump ...

without the load the sliders weren't set, but clicking on customize
would load the js again and that would attach the click event twice

fix typo
handle NoStoreException (this shouldn't really happen)

* renaming to __ prevent makemessages catching it
* non-lazy version would never work here