No API error handling on /store categories

[bartaz]

Expected behaviour

If API fails for any reason (cache, network, etc) it would be nice to have some error handling - not show category at all, show error, or something. Currently it renders empty category with 'undefined' in place of snaps:

[pmahnke]

I would u-hide the entire category, assuming that some appear

[tbille]

@bartaz maybe some kind of reload button since this call is made from the browser?

[bartaz]

Reload can be done from browser.

As Peter suggests, I think it would be fine just to hide category that failed - of course assuming other are displayed. If everything fails some error message would be good.