Eureka dashboard controller path mapping can be configured or disabled

Hello,

This PR add :

- Eureka dashboard path configurable with eureka.dashboard.path property
- Eureka dashboard disabling with eureka.dashboard.enabled property

- Minor fix on bootstrap.min.js wro minify that did not working

Julien.
We do some work constructing the `basePath` as a fully qualified url.  Does `dashboardPath` replace it?  `basePath` is used in other templates as well.