Add 'Change my email' to the user dropdown explanation

src/components/userguide/UserGuide.vue

@@ -60,6 +60,7 @@
 							You also select which is the default product. On the next sign-in this products loads first and opens on top
 							of the other products.</li>
 						<li>Change password: You need to know your old password. The password of user demoUser cannot be changed.</li>
+						<li>Change my email: Your email address is used to send you change notices, if selected. Here you can change your email address.</li>
 						<li>License information: click to see the license regarding the source code.</li>
 						<li>Sign out: Preferred way to sign out. Will stop the cookie authentication and reset the URL to sign in
 							again. When you reset your browser with F5 or Ctrl-F5 you need to reset the URL your self.</li>