Allow Template Clients to be saved without an accounts payable, current/retained earnings account

Adding a template is an unnecessarily complicated process that CSMs need to assist clients on constantly. A template client should be able to be created with a null value for accounts payable GL Key in the tbl_Client_Profile_AP table and null values for current/retained earnings GL keys in the tbl_Client_Profile_GL table. (this is permissible) These keys will need to be changed from null to a value before a client is associated with the template. The keys can already be changed from one value to another before clients are associated so this will not be a problem. There will need to be a check before being able to associate a template with a client that the values are not null. this will save the user needing to create 2 subtypes and 3-9 gl accounts before uploading the chart of accounts to the shell