Bring the application grid to all SPAs

[itswillta]

• [x] https://github.com/OpenPaaS-Suite/esn-frontend-mailto
• [x] https://github.com/OpenPaaS-Suite/esn-frontend-account
• [x] https://github.com/OpenPaaS-Suite/esn-frontend-calendar
• [x] https://github.com/OpenPaaS-Suite/esn-frontend-inbox
• [x] https://github.com/OpenPaaS-Suite/esn-frontend-calendar-public
• [x] https://github.com/OpenPaaS-Suite/esn-frontend-admin
• [x] https://github.com/OpenPaaS-Suite/esn-frontend-contacts