some tricks

some tricks were necessary, because php7 is not implemented in phpmyadmin and in rasbian jessy distribution.

These links were very very helpful for this quick n dirty experimental production:

https://hackedit.de/530/

Thank you very much!!

openEMR 4.2.2 - php7(!) - raspberry pi 3 - working fine

openEMR 4.2.2 - php7(!) - raspberry pi 3 - working fine now