Attachment check 1.8

Attachment check v1.8 changes:

Fixed issue with null post ID.

Attachment check v1.7 changes:

Options page now allows excluding forums.

Attachment check v1.6 changes:

Improved code to more accurately show which posts have orphaned attachment tags.

Attachment check v1.5 changes:

Now using finder for performing database queries.

Attachment check v1.4 changes:

Added missing phrase.

Attachment check v1.3 changes:

Fixed email subject phrasing.

Attachment check v1.2 changes:

Updated PHP file.

Attachment check v1.1 changes:

Updated addon.json file.