Deactivate sonar on travis (#984)
Deactivate sonar on travis (#984)

* Deactivate sonar on travis

The key is currently not correct. Until this is fixed, deactivate
this check.

Refs: https://github.com/MaibornWolff/codecharta/issues/959

* Use Node.js 10 on travis

Node.js v9 is not supported for a long time. Using Node.js v10
is the current oldest supported Node.js version.

* Update correctly deactivate Sonar on Travis CI #959

Co-authored-by: Ben Willenbring <a2903859767277671f224dd1b08ddbdb6a8c0dd5@t-online.de>
MaibornWolff/codecharta,MaibornWolff/codecharta,MaibornWolff/codecharta,MaibornWolff/codecharta,MaibornWolff/codecharta,MaibornWolff/codecharta,MaibornWolff/codecharta,MaibornWolff/codecharta