clean and comments for category templates and php files

src/lib/Entry.php

@@ -76,4 +76,16 @@ class Entry
         $entry->equipment_id, $entry->equipment_number, $entry->entry_date);
     }
 	}
+
+  public function AllDatesByEquipment($eqmt_id)
+	{
+    $entry_dates = DB::getInstance()->get(
+      'SELECT DISTINCT entry_date FROM plugin_materiels_entry WHERE equipment_id = ? ORDER BY entry_date DESC;', $eqmt_id);
+    $entry_dates_array = array();
+    foreach ($entry_dates as $row)
+    {
+      array_push($entry_dates_array, $row->entry_date);
+    }
+    return $entry_dates_array;
+	}
 }