Merge pull request #15 from dragos-dumi/master

Related content refactor
Renamed field_country_instrument
Merge branch 'master' of github.com:eaudeweb/cms.instrument
refs #1965 - Change region to field_country in code
refs #1965 - Change region to field_country in code
Change major version to 4.0
Merge pull request #16 from cristiroma/master

refs #1965 - Refactor cms_country and cms_region fields