views: `layout`, use unique layout in `public` controller [kfl62/trst_sys_sinatra#15][trst_main#15]
assets: css,  use unique style in modules [kfl62/trst_sys_sinatra#12][trst_main#12]
config: `firm.yml` update
update CHANGELOG
bump version v0.2.992
Merge branch 'feature/v0.2.992' into develop, fix #13