[fix] fix open in browser menu in network view

src/sakia/gui/navigation/network/controller.py

+from duniterpy.api.client import Client, API
+
 from .model import NetworkModel
 from .view import NetworkView
 from PyQt5.QtWidgets import QAction, QMenu
@@ -77,9 +79,11 @@ class NetworkController(QObject):
         node = self.sender().data()
         bma_endpoints = [e for e in node.endpoints if isinstance(e, BMAEndpoint)]
         if bma_endpoints:
-            conn_handler = next(bma_endpoints[0].conn_handler())
-            peering_url = bma.API(conn_handler, bma.network.URL_PATH).reverse_url(
-                conn_handler.http_scheme, "/peering"
+            client = Client(bma_endpoints[0])
+            # fixme: duniterpy should compose API in Client and should return url from endpoint easily, see #126
+            api_ = API(client.endpoint.conn_handler(client.session, client.proxy))
+            peering_url = api_.reverse_url(
+                api_.connection_handler.http_scheme, "/network/peering"
             )
             url = QUrl(peering_url)
             QDesktopServices.openUrl(url)