Merge pull request #6 from warszawajug/staging

Staging
Merge pull request #7 from warszawajug/staging

fixed desc 76
Fix with registration keys usage.
Merge pull request #8 from warszawajug/staging

Staging
Merge pull request #9 from warszawajug/staging

few headers fixed
New speakers pictures.
Merge pull request #11 from warszawajug/staging

workshop_19 is longer now
Merge pull request #12 from warszawajug/staging

workshop_17 is longer now
Update speakers.yaml
Update speakers.yaml
Update speakers.yaml
Update speakers.yaml
Update speakers.yaml
Merge pull request #13 from warszawajug/staging

Staging
Add meteor proxy to nginx