Add configuration setting to toggle drag drop file Import

This commit-
Adds a configuration directive to toggle drag drop Import feature as requested in #13155
TODO:
1. Test it on multiple servers.
2. Disable javascript handlers for drag drop
Signed-Off-By: Lakshay arora <arora.lakshya123@gmail.com>

libraries/classes/Config/Descriptions.php

@@ -627,6 +627,10 @@ public static function getString($path, $type = 'name')
                     . 'This might be a good way to import large files, however it can break '
                     . 'transactions.'
                 );
+            case 'Import_enable_drag_drop_import_name':
+                return __('Enable drag and drop import');
+            case 'Import_enable_drag_drop_import_desc':
+                return __('Uncheck the checkbox to disable drag and drop import');
             case 'Import_allow_interrupt_name':
                 return __('Partial import: allow interrupt');
             case 'Import_charset_name':

libraries/classes/Config/Forms/User/ImportForm.php

@@ -27,7 +27,8 @@ public static function getForms()
                 'Import/format',
                 'Import/charset',
                 'Import/allow_interrupt',
-                'Import/skip_queries'
+                'Import/skip_queries',
+                'Import/enable_drag_drop_import'
             ],
             'Sql' => [
                 'Import/sql_compatibility',

libraries/classes/Navigation/Navigation.php

@@ -83,7 +83,9 @@ public function getDisplay()
             }
             $retval .= '</div>'; //pma_navi_settings_container
             $retval .= '</div>'; // pma_navigation_content
-            $retval .= $this->_getDropHandler();
+            if($GLOBALS['cfg']['Import']['enable_drag_drop_import'] === true) { //load drag drop handler only if configuration setting is set to true
+                $retval .= $this->_getDropHandler();
+            }
             $retval .= '</div>'; // pma_navigation
         }
 

libraries/config.default.php

@@ -2179,6 +2179,14 @@
  */
 $cfg['Import']['allow_interrupt'] = true;
 
+/**
+ * Enable drag and drop import
+ * @see feature request : https://github.com/phpmyadmin/phpmyadmin/issues/13155
+ *
+ * @global bool $cfg['Import']['enable_drag_drop_import']
+ */
+$cfg['Import']['enable_drag_drop_import'] = true;
+
 /**
  *
  *