#43 Add dutch translations on contents.
#43 Add dutch translations on blogs.json.
#43 Add dutch translations on weekly.json.
#43 Add dutch translations on podcasts.json.
#43 Add dutch translations on conferences.json.
#43 Add dutch translations on mentions.
Add Dutch language option.
Create du directory to dutch version.
Merge pull request #44 from pazguille/develop

#43 Add dutch version.