Need to add categories when calling indexAllDB and indexAllFiles

[cybersonic]

As part of adding the ability to filter out by categories, we added the functionality for each individual file item as it is uploaded.

This means when you re-index all, you dont get all the categories assigned to the search again.

This needs to be added in the above functions

[cybersonic]

If anyone reads this, assign it to me and I shall create a pull request in time.