modified exec_body_scripts to load external scripts. finally moved all the js files out of tpls into their own js

todo: still need to organize the individual scripts client side,

public/src/forum/login.js

@@ -0,0 +1,9 @@
+(function() {
+	// Alternate Logins
+	var altLoginEl = document.querySelector('.alt-logins');
+	altLoginEl.addEventListener('click', function(e) {
+		if (e.target.nodeName === 'LI') {
+			document.location.href = e.target.getAttribute('data-url');
+		}
+	});	
+}());