Fixing FormField not setting readonly attribute on setReadonly(true)
Moved table-related feature steps to behat extension

Reused for tables other than GridField.
See https://github.com/silverstripe-labs/silverstripe-behat-extension/pull/51
FIX: ClassManifest errors if files contain duplicate class names (fixes #3210)
Merge pull request #3211 from kinglozzer/pulls/3210-duplicate-classes

FIX: ClassManifest errors if files contain duplicate class names (fixes #3210)
Merge pull request #3207 from chillu/pulls/behat-gridfield

Moved table-related feature steps to behat extension
Merge pull request #2967 from halkyon/formfield_readonly

Fixing FormField not setting readonly attribute on setReadonly(true)
Merge remote-tracking branch 'origin/3.1'