Logins JS Cleanup

- Remove old JS
- Standardize generate password JS style to match existing
- Move JS functions to own files

js/logins_show_otp_via_id.js

@@ -0,0 +1,16 @@
+function showOTPViaLoginID(login_id) {
+    // Send a GET request to ajax.php as ajax.php?get_totp_token_via_id=true&login_id=ID
+    jQuery.get(
+        "ajax.php", {
+            get_totp_token_via_id: 'true',
+            login_id: login_id
+        },
+        function(data) {
+            //If we get a response from post.php, parse it as JSON
+            const token = JSON.parse(data);
+
+            document.getElementById("otp_" + login_id).innerText = token
+
+        }
+    );
+}