Add middleware to api

Add new middleware class

Cast ip to string

Add specyfication for groups endpoint

Add specs for projects endpoint

Add working specs for ip_saver

Add changelog entry

Add string freeze

Fix rubocop offences

Add code review remarks

Fix typo in filename

Add docs about api restriction

Update docs file

Add changelod

Remove not needed file

Update docs file

Add changelod

Remove changelog

Apply suggestion to doc/user/group/index.md

Add code review remarks

Remove not needed code

Bring back to_s method on remote ip

Add if clause to restrictor

To avoid locking out of ssh calls

Make regex wider so it covers all internal endpoints

Add remote ip to be used in middleware

Add rubocop remarks