Update branch names of API docs and disable future for now

docs.phtml

@@ -442,13 +442,13 @@
     <table class="doctable">
     <tbody>
       <tr class="doctr">
-      <td><a href="https://code.gnucash.org/docs/MAINT">MAINT</a></td><td> |
+      <td><a href=\URL_API_STABLE>>STABLE</a></td><td> |
         <?php echo T_("current bugfix branch");?>
       </td></tr>
-      <tr class="doctr">
-      <td><a href="https://code.gnucash.org/docs/MASTER">MASTER</a></td><td> |
+      <?php /* <tr class="doctr">
+      <td><a href=\URL_API_FUTURE">FUTURE</a></td><td> |
         <?php echo T_("future feature branch");?>
-      </td></tr>
+      </td></tr> */?>
     </tbody>
     </table>
   </li>

externals/global_params.php

@@ -80,6 +80,11 @@
 
      // The URLs, we use:
      define("DEFAULT_URL", "https://www.gnucash.org/"); // The main webserver
+     define("SERVER_BUILD", "code.gnucash.org"); // alias The GIMPNet
+     define("URL_BUILD", "https://".\SERVER_BUILD."/");
+     define("URL_DOCS", \URL_BUILD."docs/");
+     define("URL_API_STABLE", \URL_DOCS."STABLE/");
+     define("URL_API_FUTURE", \URL_DOCS."FUTURE/");
      define("SERVER_IRC", "irc.gimp.net"); // alias The GIMPNet
      define("URL_IRC", "irc://".\SERVER_IRC."/gnucash");
      $URL_FLATHUB="https://flathub.org/apps/details/org.gnucash.GnuCash";

externals/menu.phtml

@@ -44,8 +44,8 @@
         <li><a href="https://wiki.gnucash.org/wiki/Contributing_to_GnuCash"><?=T_("How to help")?></a></li>
         <li><?=T_("Source Docs")?>
           <ul>
-            <li><a href="https://code.gnucash.org/docs/MAINT/"><?=T_("current bugfix branch")?></a></li>
-            <li><a href="https://code.gnucash.org/docs/MASTER/"><?=T_("future feature branch")?></a></li>
+            <li><a href=\URL_API_STABLE><?=T_("current bugfix branch")?></a></li>
+            <?php /* <li><a href=\URL_API_FUTURE><?=T_("future feature branch")?></a></li> */?>
           </ul>
         </li>
         <li><a href="https://github.com/Gnucash/"><?= T_("Browse Source Code")?></a></li>