Bump limit 1.8

Bump limit v1.8 changes:

Fixed null condition issue causing server error logs.

Bump limit v1.7 changes:

Fixed issue with members soft deleting last post in order to bypass the Bump limit function.

Bump limit v1.6 changes:

Now compatible with PHP 7.4.

Bump limit v1.5 changes:

Now supports secondary user groups.

Bump limit v1.4 changes:

Now using finder for performing database queries.

Bump limit v1.3 changes:

Added code to prevent server error log if user group permissions are not set.

Bump limit v1.2 changes:

Added additional User group permissions.

Bump limit v1.1 changes:

Correct error message in PHP file.