added possibility to disable sidebar (closes #4)

css/structure.css

@@ -71,20 +71,20 @@ body {
     }
 
     /* make content wider when there's no sidebar */
-    .mode_show #dokuwiki__content {
+    .hasSidebar.mode_show #dokuwiki__content {
         float: right;
         margin-left: -__sidebar_width__;
         width: 100%;
     }
-    [dir=rtl] .mode_show #dokuwiki__content {
+    [dir=rtl] .hasSidebar.mode_show #dokuwiki__content {
         float: left;
         margin-left: 0;
         margin-right: -__sidebar_width__;
     }
-    .mode_show #dokuwiki__content > .pad {
+    .hasSidebar.mode_show #dokuwiki__content > .pad {
         margin-left: __sidebar_width__;
     }
-    [dir=rtl] .mode_show #dokuwiki__content > .pad {
+    [dir=rtl] .hasSidebar.mode_show #dokuwiki__content > .pad {
         margin-left: 0;
         margin-right: __sidebar_width__;
     }

main.php

@@ -35,7 +35,7 @@ $showTools = !tpl_getConf('hideTools') || ( tpl_getConf('hideTools') && $_SERVER
          see http://www.dokuwiki.org/devel:action_modes for a list of action modes */ ?>
     <?php /* .dokuwiki should always be in one of the surrounding elements (e.g. plugins and templates depend on it) */ ?>
     <div id="dokuwiki__site"><div id="dokuwiki__top"
-        class="dokuwiki site mode_<?php echo $ACT ?>">
+        class="dokuwiki site mode_<?php echo $ACT ?> <?php echo ($conf['sidebar']) ? 'hasSidebar' : '' ?>">
         <?php html_msgarea() /* occasional error and info messages on top of the page */ ?>
         <?php tpl_includeFile('header.html') ?>
 
@@ -112,12 +112,14 @@ $showTools = !tpl_getConf('hideTools') || ( tpl_getConf('hideTools') && $_SERVER
         <div class="wrapper">
 
             <!-- ********** ASIDE ********** -->
+            <?php if ($conf['sidebar']): ?>
                 <div id="dokuwiki__aside"><div class="pad include">
                     <?php tpl_includeFile('sidebarheader.html') ?>
                     <?php tpl_include_page($conf['sidebar'], 1, 1) /* includes the nearest sidebar page */ ?>
                     <?php tpl_includeFile('sidebarfooter.html') ?>
                     <div class="clearer"></div>
                 </div></div><!-- /aside -->
+            <?php endif; ?>
 
             <!-- ********** CONTENT ********** -->
             <div id="dokuwiki__content"><div class="pad">