build share url
adds organization url
Merge pull request #681 from CartoDB/CDB-3834

CDB-3834 fixes organization url generation in the ShareDialog
CDB-3837 Rake ready
Merge pull request #682 from CartoDB/CDB-3837

CDB-3837
needed to add unique types from CDB-3835
Merge branch 'master' into CDB-3835
CDB-3835 more specs