Add feature flag for donations

classes/config.template

 define('DONOR_INVITES',     2);
 
 // Features
-define('FEATURE_EMAIL_REENABLE',     true);
-define('FEATURE_SEND_EMAIL',         true);  //Attempt to send email from the site
-define('FEATURE_IRC',                true);  //Attempt to send messages to IRC
-define('FEATURE_ENFORCE_LOCATIONS',  true);  //Require users to verify login from unknown locations
-define('FEATURE_SET_ENC_KEY_PUBLIC', false); //Allow the site encryption key to be set without an account (Should only be used for initial setup)
+define('FEATURE_DONATE',             false); // Enable donation page
+define('FEATURE_EMAIL_REENABLE',     true);  // Send re-enable requests to user's email
+define('FEATURE_ENFORCE_LOCATIONS',  true);  // Require users to verify login from unknown locations
+define('FEATURE_IRC',                true);  // Attempt to send messages to IRC
+define('FEATURE_SEND_EMAIL',         true);  // Attempt to send email from the site
+define('FEATURE_SET_ENC_KEY_PUBLIC', false); // Allow the site encryption key to be set without an account (Should only be used for initial setup)
 
 // User class IDs needed for automatic promotions. Found in the 'permissions' table
 // Name of class  Class ID (NOT level)

design/privateheader.php

           <li id="nav_invite" class="brackets<?=Format::add_class($PageID, array('user','invite'), 'active', false)?>">
             <a href="user.php?action=invite">Invite<?=$Invites?></a>
           </li>
+<? if (FEATURE_DONATE) { ?>
           <li id="nav_donate" class="brackets<?=Format::add_class($PageID, array('donate'), 'active', false)?>">
             <a href="donate.php">Donate</a>
           </li>
+<? } ?>
           <li id="nav_staff" class="brackets<?=Format::add_class($PageID, array('staff'), 'active', false)?>">
             <a href="staff.php">Staff</a>
           </li>

sections/donate/index.php

 <?
+if (!FEATURE_DONATE) {
+  header('Location: index.php');
+  die();
+}
+
 //Module mini-config
 include(SERVER_ROOT.'/sections/donate/config.php');