Pulling the stub plugin panel back out; we'll flesh it out more for 1.0.x and see if we can make it easier to disable through the config file for now.

Revert "Stub plugins administration panel, allows for disabling/re-enabling plugins from the default plugins list."

This reverts commit d9a9fd3779.

lib/statusnet.php

@@ -163,11 +163,6 @@ class StatusNet
     {
         // Load default plugins
         foreach (common_config('plugins', 'default') as $name => $params) {
-            $key = 'disable-' . $name;
-            if (common_config('plugins', $key)) {
-                continue;
-            }
-
             if (is_null($params)) {
                 addPlugin($name);
             } else if (is_array($params)) {