BabyKit - Continue Constellation to load image and description from project files

The project files, 巨蟹座.jpg&json are content files. They should be loaded into application dynamically, and they are in application installation folder, so changed FileHelper to read it correctly.

So far the other 11 constellation content files are handled, they will be submit later.
BabyKit - Added the other 11 constellations images and descriptions