Sessions are only needed when logged in

[imjoehaines]

Right now we call session_start in index.php

sihae/public/index.php

Lines 29 to 38 in e21b21e

	session_start([
	'name' => 'Sihae',
	'use_strict_mode' => true,
	'use_only_cookies' => true,
	'gc_maxlifetime' => 60 * 15,
	'cookie_lifetime' => 0,
	'cookie_httponly' => true,
	'sid_length' => 64,
	'sid_bits_per_character' => 6,
	]);

but we only need a session when a user is logged in; can we only start a session when logging someone in?