fix #2564 add analyzer for description field

...java/org/codelibs/fess/app/service/DataConfigService.java

...java/org/codelibs/fess/app/service/FileConfigService.java

.../java/org/codelibs/fess/app/service/WebConfigService.java

...main/resources/fess_indices/.fess_config.data_config.json

...es/fess_indices/.fess_config.data_config/data_config.json

...main/resources/fess_indices/.fess_config.file_config.json

...es/fess_indices/.fess_config.file_config/file_config.json

src/main/resources/fess_indices/.fess_config.web_config.json

...rces/fess_indices/.fess_config.web_config/web_config.json