PLF-5811: Slowness in suggestion portlet

Fix description: Update PeopleRestServices and SpaceRestServices to use the new methods implemented at SOC-4118:
* Limit the total amount of provided suggestions.
* Get the suggestions only from that sample.
Crowdin injection w16 - Add Ukrainian files on 20140416
Merge commit '686e2c242bd585f1dba55343c5027d758cefbf64' into HEAD