allow mod/view in install mode to load pcss files. Fix unstiled install

index.php

@@ -136,9 +136,11 @@ if(! x($_SESSION,'sysmsg_info'))
  * any plugins have been added or removed and reacts accordingly.
  */
 
-if($install)
+// in install mode, any url loads install module
+// but we need "view" module for stylesheet
+if($install && $a->module!="view")
 	$a->module = 'install';
-elseif($maintenance)
+elseif($maintenance && $a->module!="view")
 	$a->module = 'maintenance';
 else {
 	check_url($a);