Revert "* [Cc]an't -> [Cc]annot"

This reverts commit 0ab17f382b.

plugins/Facebook/facebook/facebookapi_php5_restlib.php

@@ -2951,7 +2951,7 @@ function toggleDisplay(id, type) {
 
 
   /**
-   * Bans a list of users from the app. Banned users cannot
+   * Bans a list of users from the app. Banned users can't
    * access the app's canvas page and forums.
    *
    * @param array $uids an array of user ids

plugins/Facebook/facebook/jsonwrapper/JSON/JSON.php

@@ -124,7 +124,7 @@ class Services_JSON
     *                                   "{...}" syntax creates associative arrays
     *                                   instead of objects in decode().
     *                           - SERVICES_JSON_SUPPRESS_ERRORS:  error suppression.
-    *                                   Values which cannot be encoded (e.g. resources)
+    *                                   Values which can't be encoded (e.g. resources)
     *                                   appear as NULL instead of throwing errors.
     *                                   By default, a deeply-nested resource will
     *                                   bubble up with an error, so all return values

plugins/Facebook/facebookaction.php

@@ -513,7 +513,7 @@ class FacebookNoticeList extends NoticeList
     /**
      * show the list of notices
      *
-     * "Uses up" the stream by looping through it. So, probably cannot
+     * "Uses up" the stream by looping through it. So, probably can't
      * be called twice on the same list.
      *
      * @return int count of notices listed.

plugins/Facebook/facebookhome.php

@@ -108,7 +108,7 @@ class FacebookhomeAction extends FacebookAction
                 $user = User::staticGet('nickname', $nickname);
 
                 if (!$user) {
-                    $this->showLoginForm(_("Server error. Could not get user."));
+                    $this->showLoginForm(_("Server error - couldn't get user!"));
                 }
 
                 $flink = DB_DataObject::factory('foreign_link');