Updated 'more' anchor for attachments to do an XHR GET

Conflicts:

	lib/attachmentlist.php
	plugins/OStatus/classes/Ostatus_profile.php

Merge tried to delete things that it seems it shouldn't, very confusing order. Hope rest of the cherry-picking isn't a problem.

theme/base/css/display.css

@@ -1284,9 +1284,16 @@ height:16px;
 position:relative;
 padding-left:16px;
 }
-#attachments .attachment {
+#attachments .attachment,
+.notice .attachment.more {
 padding-left:0;
 }
+.notice .attachment.more:before {
+content:'( ';
+}
+.notice .attachment.more:after {
+content:' )';
+}
 .notice .attachment img {
 position:absolute;
 top:18px;