v3.1.2

Bigger Changes:

• OAuth2 login is fixed and working with JHipster v6

Commits:

• specify exact app-auth version cc4b6e4
• fix login to align with latest jhipster v6 changes 4d3248c
• update app-auth, add react-native-cookies to oauth2 apps, clear on logout 33b9a21
• remove unused oauth2 jhipster server files e151243
• align entity fixtures to naming scheme 52c5f02

v3.1.1...v3.1.2