Notice URIs are not necessarily URLs.

Let's use getUrl() for URL retrieval. May throw exceptions, but
only if it's a Notice that cannot be linked like that anyway.

plugins/FacebookBridge/lib/facebookclient.php

@@ -628,7 +628,7 @@ class Facebookclient
 
         // Facebook has a 420-char hardcoded max.
         if (mb_strlen($statustxt) > 420) {
-            $noticeUrl = common_shorten_url($this->notice->uri);
+            $noticeUrl = common_shorten_url($this->notice->getUrl());
             $urlLen = mb_strlen($noticeUrl);
             $txt = mb_substr($statustxt, 0, 420 - ($urlLen + 3)) . ' … ' . $noticeUrl;
         }

plugins/Linkback/LinkbackPlugin.php

@@ -207,7 +207,7 @@ class LinkbackPlugin extends Plugin
                                          $profile->nickname,
                                          common_exact_date($this->notice->created)),
                       'excerpt' => $this->notice->content,
-                      'url' => $this->notice->uri,
+                      'url' => $this->notice->getUrl(),
                       'blog_name' => $profile->nickname);
 
         $fetcher = Auth_Yadis_Yadis::getHTTPFetcher();

plugins/OStatus/OStatusPlugin.php

@@ -1075,7 +1075,7 @@ class OStatusPlugin extends Plugin
         // TRANS: %1$s is the unfavoring user's name, %2$s is URI to the no longer favored notice.
         $act->content = sprintf(_m('%1$s no longer likes %2$s.'),
                                $profile->getBestName(),
-                               $notice->uri);
+                               $notice->getUrl());
 
         $act->actor   = ActivityObject::fromProfile($profile);
         $act->object  = ActivityObject::fromNotice($notice);

plugins/QnA/QnAPlugin.php

@@ -465,7 +465,7 @@ class QnAPlugin extends MicroAppPlugin
             $ellipsis = _m('…');
             $short = mb_substr($content, 0, $max - 1);
             $short .= sprintf('<a href="%1$s" rel="more" title="%2$s">%3$s</a>',
-                              $notice->uri,
+                              $notice->getUrl(),
                               // TRANS: Title for link that is an ellipsis in English.
                               _m('more...'),
                               $ellipsis);

plugins/TwitterBridge/twitter.php

@@ -379,7 +379,7 @@ function format_status($notice)
 
     // Twitter still has a 140-char hardcoded max.
     if (mb_strlen($statustxt) > 140) {
-        $noticeUrl = common_shorten_url($notice->uri);
+        $noticeUrl = common_shorten_url($notice->getUrl());
         $urlLen = mb_strlen($noticeUrl);
         $statustxt = mb_substr($statustxt, 0, 140 - ($urlLen + 3)) . ' … ' . $noticeUrl;
     }