…etwork status (#384)

* feat(network): new network service that return the network status

* feat(map):
* new feature that change the url to a path depending on the network status.
* the query can now select features from layers.

* feat(map): add a directive that change url to path depending on the network status

* fix(datasource): remove useless attributes

* Delete mapOffline.directive.spec.ts

* Update datasource.ts

* Update datasource.ts

…381)

* feat(geo:search): ajout du bouton add / remove de la couche, ajout des métadonnées

* feat(geo-search): Modifications --> ajustement des propriétés couche / localisation, ajout des liens Google Maps / Google Street View