Move logic from constructor to separate function
Add more public access methods for internal variable access (password
min length settings, error login code, error login string error)
All error messages are declared in constructor with wrapper function to
create html error string for template creation
Add wrapper function for exit/abort and page name read for easier mocking
in testing
Fixes for multi login main function caller and cached query problem: do
not cache query for login
Add reverse default access list SESSION variable and public readers
Update logout with unset of full SESSION array to empty, use external
session class for all session calls. Also unset euid on logout
183cadb0fd