ver. 0.283: Legacy class cleanup — S, Html, Email, Image, Log, Mobile_Detect → Shared namespace

- Migrate class.S → Shared\Helpers\Helpers (140+ files), remove 12 unused methods
- Migrate class.Html → Shared\Html\Html
- Migrate class.Email → Shared\Email\Email
- Migrate class.Image → Shared\Image\ImageManipulator
- Delete class.Log (unused), class.Mobile_Detect (outdated UA detection)
- Remove grid library loading from admin (index.php, ajax.php)
- Replace gridEdit usage in 10 admin templates with grid-edit-replacement.php
- Fix grid-edit-replacement.php AJAX to send values as JSON (grid.js compat)
- Remove mobile layout conditionals (m_html/m_css/m_js) from Site + LayoutsRepository
- Remove \Log::save_log() calls from OrderAdminService, ShopOrder, Order

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

templates/articles/article.php

@@ -5,7 +5,7 @@ $text = \front\Views\Articles::generateHeadersIds( $text );
 ?>
 <div class="article">
   <?
-    $this -> article['language']['seo_link'] ? $url = $this -> article['language']['seo_link'] : $url = 'a-' . $this -> article['id'] . '-' . \S::seo( $this -> article['language']['title'] );
+    $this -> article['language']['seo_link'] ? $url = $this -> article['language']['seo_link'] : $url = 'a-' . $this -> article['id'] . '-' . \Shared\Helpers\Helpers::seo( $this -> article['language']['title'] );
 
     if ( $this -> article['show_title'] )
       echo '<h2 class="article-title">' . $this -> article['language']['title'] . '</h2>';
@@ -23,14 +23,14 @@ $text = \front\Views\Articles::generateHeadersIds( $text );
     <? if ( $this -> article['language']['table_of_contents'] ):?>
       <div class="table-of-contents">
         <div class="title">
-          <?= \S::lang( 'spis-tresci' );?>
+          <?= \Shared\Helpers\Helpers::lang( 'spis-tresci' );?>
         </div>
         <?= $this -> article['language']['table_of_contents'];?>
       </div>
     <? else:?>
       <div class="table-of-contents">
         <div class="title">
-          <?= \S::lang( 'spis-tresci' );?>
+          <?= \Shared\Helpers\Helpers::lang( 'spis-tresci' );?>
         </div>
         <?= \front\Views\Articles::generateTableOfContents( $text );?>
       </div>
@@ -89,7 +89,7 @@ $text = \front\Views\Articles::generateHeadersIds( $text );
         <span></span>
         <span></span>
         <span></span>
-        <div class="title"><?= ucfirst( \S::lang( 'podziel-sie-z-innymi' ) );?></div>
+        <div class="title"><?= ucfirst( \Shared\Helpers\Helpers::lang( 'podziel-sie-z-innymi' ) );?></div>
         <div class="content">
           <a class="fb" href="http://www.facebook.com/sharer.php?u=http://www.<?= $_SERVER['SERVER_NAME'];?>/<?= $url;?>" onclick="javascript:window.open(this.href, '', 'menubar=no,toolbar=no,resizable=yes,scrollbars=yes,height=600,width=600');return false;" title="facebook" target="_blank" rel="nofollow">
             <img src="/images/system/logo-facebook.jpg" alt="facebook" />