store private key safely prompt

index.html

@@ -9829,6 +9829,7 @@
 				})
 
 				document.getElementById('privkey_signin_btn_alt').addEventListener('click', (ev) => {
+					alert('Please store your Private Key safely')
 					document.getElementById('priv_key_field').value = document.getElementById("newprivatekey").value
 					document.getElementById('privkey_signin_btn').click()
 				})