Gallery2 to provide full photo album features

This is to recap the full album features of Gallery module. Actually, Gallery module is just an interfacing module. Actual album features are provided by the standalone Gallery2 application.

1. Album/Sub-album: Photos are stored in albums. Sub-albums are allowed within albums.
2. Permissions can be set per album base or per photo base. For example, each album can allow individual administrators who can allow permissions to various group of person.
3. Not only photos but also regular files can be stored in albums.
4. Albums can serve as secured storage space for regular files if limited permissions are required.
5. "TCHS 慈少高中團" is the first user who takes advange of the complete album feature.
   1. All photos in TCHS 慈少高中團 are stored as original resolution.
   2. A group of users are defined as the administrators of TCHS 慈少高中團 so that they can have freedom to remove or to add photos if needed.
6. "TCNW IT WEB" is another user who explores the usage of Gallery.
   1. Videos are stored in TCNW IT WEB.
   2. Videos are stored as FLV (Flash Video) format. The resolution is originally stored as 960 x 720. However, during playback, the resoultion is set to 480 x 360. This would allows a smaller screen during playback. And the full-screen playback can provide very clear quality.
   3. The permission has been set to allow only IT WEB people can view the videos.