move pry to development/test group

[#79770248]
add slack-notifier gem

[#79770248]
cleanups in config.yml

[#79770248]
add slack configs

[#79770248]
create basenotification class

[#79770248]
create ask for support notification

[#79770248]
include url helpers + add default host  to provide proper support_url

[#79770248]
create base notifier

[#79770248]
create notifier class

[#79770248]
create slack notifier class

[#79770248]
send notification if someone ask for support

[#79770248]