Deleted user sync

[Rowbotronics]

When a user is deleted in WA, push/pull in MCP will fail with error:

Traceback (most recent call last):
File "./mcp/main/tasks.py", line 31, in run_as_task
func(*args, **kwargs)
File "./mcp/wildapricot/functions.py", line 210, in push_users
if not WildapricotUser.query.filter_by(wildapricot_user_id=wa_contact['Id']):
TypeError: 'bool' object is not subscriptable

This situation should be handled gracefully by logging the exception and flagging the account somehow.