Папки категорий располагаются в папке "galleries".
Ниже смотрите дерево небольшой галереи:
.
|-- admin
|-- doc
|-- galleries
| |-- category-1
| | |-- category-1.1
| | | |-- category-1.1.1
| | | | |-- category-1.1.1.1
| | | | | |-- pwg_high
| | | | | | +-- wedding.jpg
| | | | | |-- thumbnail
| | | | | | +-- TN-wedding.jpg
| | | | | +-- wedding.jpg
| | | | +-- category-1.1.1.2
| | | +-- category-1.1.2
| | |-- category-1.2
| | | |-- pookie.jpg
| | | +-- thumbnail
| | | +-- TN-pookie.jpg
| | +-- category-1.3
| +-- category-2
| |-- piglet.gif
| |-- pwg_representative
| | +-- video.jpg
| |-- thumbnail
| | +-- TN-piglet.jpg
| +-- video.avi
|-- include
|-- install
|-- language
|-- template
+-- tool