Adding description + source infos
Adding description + source infos
Update countries.json
placed set seelction between used and unused sets
set selection improvement -- fixes  #208
fixed typo in description of country datasets, some rephrasing
improved social graph description
fixes #210
working towards #194 -- added sets become "dontcare", removed sets are removed from query. changing datasets removes query
Merge branch 'master' into gh-pages