client/users: stop native completion

Disabled for user registration and editing where it causes more mess
than good.

client/css/forms.styl

@@ -288,3 +288,7 @@ input[type=file]:focus+.file-dropper,
                     color: $button-enabled-text-color
             .disabled
                 color: $inactive-link-color
+
+
+.anticomplete
+    display: none

client/html/user_edit.tpl

@@ -1,5 +1,8 @@
 <div id='user-edit'>
     <form>
+        <input class='anticomplete' type='text' name='fakeuser'/>
+        <input class='anticomplete' type='password' name='fakepass'/>
+
         <ul class='input'>
             <% if (ctx.canEditName) { %>
                 <li>

client/html/user_registration.tpl

@@ -1,6 +1,9 @@
 <div class='content-wrapper' id='user-registration'>
     <h1>Registration</h1>
     <form autocomplete='off'>
+        <input class='anticomplete' type='text' name='fakeuser'/>
+        <input class='anticomplete' type='password' name='fakepass'/>
+
         <div class='input'>
             <ul>
                 <li>

client/js/views/user_edit_view.js

@@ -33,7 +33,9 @@ class UserEditView extends events.EventTarget {
         for (let node of this._formNode.querySelectorAll('input, select')) {
             node.addEventListener(
                 'change', e => {
-                    this.dispatchEvent(new CustomEvent('change'));
+                    if (!e.target.classList.contains('anticomplete')) {
+                        this.dispatchEvent(new CustomEvent('change'));
+                    }
                 });
         }