make PM welcome images local, and smaller

config/locales/server.en.yml

@@ -1292,33 +1292,33 @@ en:
 
         - While reading a topic, jump to the top &uarr; by selecting the topic title. Select the green progress bar at the bottom right for full navigation controls, or use the <kbd>home</kbd> and <kbd>end</kbd> keys.
 
-            <img src="http://www.discourse.org/images/welcome/progress-bar.png" width="190" height="52">
+            <img src="/images/welcome/progress-bar.png" width="143" height="39">
 
 
 
         ## How do I reply?
 
-        - To reply to the overall topic, use the Reply button <img src="http://www.discourse.org/images/welcome/reply-topic.png" width="29" height="25">  at the very bottom of the page.
+        - To reply to the overall topic, use the Reply button <img src="/images/welcome/reply-topic.png" width="29" height="25">  at the very bottom of the page.
 
-        - To reply to a specific post, use the Reply button <img src="http://www.discourse.org/images/welcome/reply-post.png" width="29" height="25"> on that post.
+        - To reply to a specific post, use the Reply button <img src="/images/welcome/reply-post.png" width="29" height="25"> on that post.
 
-        - To take the conversation in a different direction, but keep them linked together, use Reply as New Topic <img src="http://www.discourse.org/images/welcome/reply-as-new-topic.png" width="33" height="25"> to the right of the post.
+        - To take the conversation in a different direction, but keep them linked together, use Reply as New Topic <img src="/images/welcome/reply-as-new-topic.png" width="33" height="25"> to the right of the post.
 
         To quote someone in your reply, select the text you wish to quote, then press any Reply button.
 
-        <img src="http://www.discourse.org/images/welcome/quote-reply.png" width="467" height="172">
+        <img src="/images/welcome/quote-reply.png" width="350" height="129">
 
         (To quote an entire post, use the Import Quote button on the editor toolbar.)
 
         To ping someone in your reply, mention their name. Type `@` and an autocompleter will pop up.
 
-        <img src="http://www.discourse.org/images/welcome/username-completion.png" width="307" height="174">
+        <img src="/images/welcome/username-completion.png" width="230" height="131">
 
         For [standard Emoji](http://www.emoji-cheat-sheet.com/), just start typing `:` or the traditional smileys `:)` :smile:
 
         ## What else can I do?
 
-        <img src="http://www.discourse.org/images/welcome/like-link-flag-bookmark.png" width="225" height="61">
+        <img src="/images/welcome/like-link-flag-bookmark.png" width="169" height="46">
 
         There are action buttons at the bottom of each post.
 
@@ -1331,7 +1331,7 @@ en:
 
         When someone replies to your post, quotes your post, or mentions your `@username`, a number will appear over a conversation button at the top right of the page. Use it see who's talking to you, and where.
 
-        <img src="http://www.discourse.org/images/welcome/notification-panel.png" width="237" height="78">
+        <img src="/images/welcome/notification-panel.png" width="178" height="59">
 
         You will get email notifications of direct replies (and private messages) if you are not present on the site when they arrive.
 
@@ -1341,7 +1341,7 @@ en:
 
         You will see the blue new and number indicators next to these topics:
 
-        <img src="http://www.discourse.org/images/welcome/topics-new-unread.png" width="490" height="119">
+        <img src="/images/welcome/topics-new-unread.png" width="368" height="89">
 
         You can change the individual notification state of a topic via the control at the bottom of the topic (this can also be set per category). To change how you track topics, or the definition of new, see [your user preferences](/my/preferences).