Replaced php code for app version in main template with a template variable.

Author: tbrehm

interface/lib/app.inc.php

@@ -181,6 +181,7 @@ public function tpl_defaults()
 		if(isset($_SESSION['s']['user']) && $this->auth->has_clients($_SESSION['s']['user']['userid'])) {
 			$this->tpl->setVar('is_reseller', 1);
 		}
+		$this->tpl->setVar('ISPC_APP_VERSION', ISPC_APP_VERSION);
     }
 
 } // end class

interface/web/themes/default/templates/main.tpl.htm

@@ -62,8 +62,7 @@ <h1 id="ir-HeaderLogo" class="swap"><span>ISPConfig 3</span></h1>
 		<!-- end: #main -->
 		<!-- begin: #footer -->
 		<div id="footer">
-<!--      Powered by <a href="http://www.ispconfig.com/">ISPConfig <?php echo ISPC_APP_VERSION; ?> beta</a></div> -->
-      Powered by <a href="http://www.howtoforge.com/forums/showthread.php?t=26988" target="_blank">ISPConfig <?php echo ISPC_APP_VERSION; ?> beta</a></div>
+      Powered by <a href="http://www.howtoforge.com/forums/showthread.php?t=26988" target="_blank">ISPConfig <tmpl_var name="ISPC_APP_VERSION"> beta</a></div>
     </div>
 		<!-- end: #footer -->
 	</div>