front-end
Merge branch 'master' of https://github.com/Exartu/Exartu-CRM
Merge branch 'master' of https://github.com/Exartu/Exartu-CRM
Merge branch 'master' of https://github.com/Exartu/Exartu-CRM
Merge branch 'master' of https://github.com/Exartu/Exartu-CRM
Merge branch 'master' of https://github.com/Exartu/Exartu-CRM
Merge branch 'master' of https://github.com/Exartu/Exartu-CRM
implement role definitions