2.0.4

Hot Fix:

- Category tree under product options won't save values.
- Detect php max_execution_time and switch to batch mode automatically before script failing.
- Duplicates check for bundle items with associated also visible in catalog.
- Detailed products in the feed by custom options missing price currency.
- Use image cache to output product image urls instead of direct media urls.
- Rendering large category numbers on the feed configuration page.
- Taxonomies not been saved because reaching the max_post_vars.