feat: update font to Roboto across templates and add campaign/ad group filters in product views

- Changed font from Open Sans to Roboto in layout files.
- Added campaign and ad group filters in products main view.
- Enhanced product history to include campaign and ad group IDs.
- Updated migrations to support new campaign and ad group dimensions in product statistics.
- Introduced new migration files for managing campaign types and dropping obsolete columns.

templates/campaigns/main_view.php

@@ -110,7 +110,7 @@ function reloadChart()
 
       Highcharts.chart( 'container', {
         chart: {
-          style: { fontFamily: '"Open Sans", sans-serif' },
+          style: { fontFamily: '"Roboto", sans-serif' },
           backgroundColor: 'transparent'
         },
         title: { text: '' },
@@ -205,6 +205,15 @@ $( function()
         {
           campaigns_select.val( campaign_to_restore ).trigger( 'change' );
         }
+        else
+        {
+          var account_option = campaigns_select.find( 'option' ).filter( function() {
+            return $.trim( $( this ).text() ).toLowerCase() === '--- konto ---';
+          } ).first();
+
+          if ( account_option.length )
+            campaigns_select.val( account_option.val() ).trigger( 'change' );
+        }
 
         restore_campaign_after_client_load = '';
       }
@@ -388,3 +397,4 @@ $( function()
   }
 });
 </script>
+