Changed default css class: --NOVALUE-- for tile-default
Address issue #262: default css_class to tile-default
Address issue #262: default css_class to tile-default
Test for issue #262: default css class and other css classes
Merge branch 'master' into issue_262
Updated CHANGES
Merge branch 'master' into issue_262
Change in css_field with upgrade step
Flake8
Fix in upgrade step
Flake8
Upgrade step and test for issue_262
Some improvements to test and upgrade step
Removed some old comments
Updates in tests
New test for default style always first
Merge pull request #267 from collective/issue_262

Fix default tile class
Merge branch 'master' into issue_241