missing content.save... events when batch editing items

[raffaelj]

When updating entries via web ui and using the helper methods/routes to batch edit or to update state, the entries are updated without triggering the content.save.before etc. events.

This makes content validation before saving or triggering webhooks when an item is changed to "published" impossible.

Affected internal api routes:

• /collection/updateState
• /collection/batchUpdate
• /tree/updateOrder

Steps to reproduce:

• create a collection named "pages"
• create at least one entry
• go to /content/collection/items/pages
• click checkbox at the left of the item --> buttons "Update state" and "Batch edit" appear
• click button and change state