Member notes 1.6

Member notes v1.6 changes:

Fixed null issue with user_id.

Member notes v1.5 changes:

Now compatible with PHP 7.4.

Member notes v1.4 changes:

Now using finder for performing database queries.

Member notes v1.3 changes:

Now support using BBCodes when editing the member notes.

Member notes v1.2 changes:

Now allows HTML in the member notes.

Member notes v1.1 changes:

Updated setup to use schema manager.