Merge pull request #211 from namnatulco/gh-pages

reorder events, add OKLab Ulm CodeWeek Event & Treffen
: are not allowed in values
Update events.yml
Update events.yml
Update events.yml
Update index.html
Update index.html
Update index.html
Added Europe Code Week event for Leipzig
Merge pull request #212 from CodeforLeipzig/update-events

Added Europe Code Week event for Leipzig
add codeweek post
change ing name
fix typos
Update for Munich's next event/remove old events
add hamburg event
Create opendatasachsen
Merge pull request #213 from vavoida/patch-1

Create opendatasachsen
fix layout for sachsen blogpost
fix typos
add blogpost on newsletter