add staging environment config
add secret key base for staging environment
add db config for staging env
same gems in production for staging
fix undefined database name
add feature spec for set slack and github tokens feature
create migration for bot config model
run pending migrations
add spec for BotConfig model
create BotConfig model
create post route to bot_config#save
add spec for BotConfig controller
add unfinished save action to bot config controller
add CommandBuilder class
generate bot config command using CommandBuilder
write better spec for BotConfigController#save example
add apart_from scope to BotConfig model
ensure there's only one bot config record
expect for bot config load at BotConfig#index
load last saved config when showing bot config page