Major update to the entire full system

Rst 2425 full system upgrade (#9)

* Switched from forego to invoker
Using freeport to find free ports

* Switched from forego to invoker
Using freeport to find free ports

* Switched from forego to invoker
Using freeport to find free ports

* Downgraded bundler - it does not seem to support things bundled with 1.7.x

* Version number of gem is now replicated inside the docker container to ensure things stay in sync

* Ability to easily host own services

* RST-2425 - Formatted environment variable output correctly for use exporting to .env in local services

* RST-2425 - Added selenium grid (conditionally enabled)

* Allow scaling of browser nodes using command line

* RST-2425 Added zalenium support

* Added ability to use localhost.from.docker as a platform independent way of getting back to the host

* Configured docker environment to ignore .env files

(cherry picked from commit dd8e172022abfefb05c599703db79b772292c78a)

* DB_NAME is now set everywhere rather than relying on default value - this was causing issues when developing locally

* Optionally enable video recording in zalenium

(cherry picked from commit d54e45e65ee38e21649f6e88166558ba4e67cfea)

* RST-2425 - Added ET3 support
Added API support
Added CCD Export support
Added admin support

* Ready for release