GTNPORTAL-3519 BZ1117813 Reverted change of category's name from 854461f

I actually considered that, but I'm usually not a big fan of adding special logic for WSRP. Another side-effect of the 854461f (as I commented on the BZ) is that two local portlets with the same name, but in different applications are treated equally by the import, when they shouldn't. Basically, the second one is ignored, as it detects that a portlet with the same name and same contentId already exists. 

Another solution that I was considering with @ppalaga was to namespace the portletName, as portletName itself is not indicative of the real portlet behind the name (for the reasons I explained before). Unfortunately, playing with the application name + portlet name caused a lot of problems. 

In any case, we can check with @pmensik if the "space in name" problem is still there.