New findByDescription() method in /model/Widget.php
New osc_show_widgets_by_description() in hUtils.php
add index in TABLE `t_widget` for new Widget->findByDescription()

```sql
ALTER TABLE `t_widget` ADD INDEX `idx_s_description` (`s_description`);
```
removed non-related changes in this commit
Merge pull request #1444 from conejoninja/f1428

F1428