Update ol3
Make OSM attribution non-collapsible in map
Fix flake8 ignore comment

Do not skip the whole file, only the line.
Merge pull request #33 from tsauerwein/ol3-attribution

Make OSM attribution non-collapsible in map
Make fields shown in admin list configurable
Add Bootstrap 3.2.0
Use Bootgrid for admin list view
Add i18n files for list view