Transform content based on feature.contentTransformations.
Add basic content transformations for image and table plugins.
Simplified contentTransformations.
Prevent conflicts where running filter fn twice at the same time.
Made transformations more accurate - only first one in a group which is matching ACRs will be executed.
Implement content forms unification by filter.
Unprotect and then protect back elements names.
Docs for new features.
Apply transformations when checking content.
Fixed typo.
Merge branch 't/9989' into major