- FormatHTML sanitizes the goldmark output with a bluemonday UGC policy
extended only with what goldmark and the imported posts and categories
use; unsafe markup is stripped, as Winter's Html::clean strips it
- HTML the policy keeps whole is stored byte for byte (token comparison)
- CheckHTML keeps its signature and 422 contract, refusing HTML the
policy would change
- the three regexes are gone: the CR-01 bypasses are neutralized and
"Data:" or "metadata:" text is no longer refused (WR-01)
- add a content textarea (size huge) after description, with en and pl phrases
- add content to Category.Fillable
- export classes.CheckHTML and run it from FormBeforeCreate and FormBeforeUpdate:
unsafe category content answers 422 on content, blank content is stored as NULL
