fix bug 1145580 - add info about what the slug rules are

when moving pages.

kuma/wiki/templates/wiki/move_document.html

@@ -15,19 +15,25 @@
       <div class="title">
         <h1>{{ _('<span class="title-prefix">Moving</span> <em>{title}</em>')|fe(title=document.title) }}</h1>
       </div>
-      <p>{{ _('Please provide a new slug for this page using the field below.') }}</p>
-
+      <p>{{ _('Please specify the new location for this page by filling out the fields below. Be sure your new destination follows these rules:') }}</p>
+      <ul class="move-page-rules">
+        <li>{{ _('Make sure the location you specify is located immediately under an existing page.') }}
+        <li>{{ _('Don\'t include the URL scheme ("https://").') }}</li>
+        <li>{{ _('Enter only the part of the URL following "/docs/".') }}</li>
+        <li>{{ _('Don\'t include a trailing slash (this will be removed for you if you include it, but you should leave it out).') }}</li>
+      </ul>
+
       {% if conflicts: %}
       <div class="warning">
-        <p>{{ _('Your requested move cannot be completed due to slug conflicts:') }}</p>
+        <p>{{ _('Your requested move cannot be completed due to the following slug conflicts:') }}</p>
 
         <ul class="document-list">
         {% for doc in descendants %}
           <li>{{ doc }}</li>
         {% endfor %}
         </ul>
 
-        <p>{{ _('Please choose a different slug value.') }}</p>
+        <p>{{ _('Please try a different destination slug. <strong>Double check to be sure you\'re trying to move to the right place!</strong>') }}</p>
       </div>
       {% endif %}
 
@@ -69,7 +75,7 @@ <h1>{{ _('<span class="title-prefix">Moving</span> <em>{title}</em>')|fe(title=d
                 <input type="hidden" value="{{ document.locale }}" id="locale" name="locale"/>
               </dd>
               <dd class="parent-suggest-container">
-                <button class="transparent parent-suggest-link" type="button">{{ _('Lookup by Document Title') }}</button>
+                <button class="transparent parent-suggest-link" type="button">{{ _('Look up by Document Title') }}</button>
 
                 <div id="parent-suggest-input-container">
                     <input type="text" placeholder="{{ _('Parent Title') }}" id="parent-suggestion" disabled />

media/stylus/components/wiki/edit/move-page-rules.styl

@@ -0,0 +1,5 @@
+ul.move-page-rules {
+    padding-left: 40px;
+    margin-bottom: 24px;
+    list-style: outside none disc;
+}

media/stylus/wiki-edit.styl

@@ -32,6 +32,7 @@ Move page
 ====================================================================== */
 
 @require 'components/wiki/edit/move-page.styl';
+@require 'components/wiki/edit/move-page-rules.styl';
 
 
 /*