core (sat_main): avoid double init + log version

sat/core/sat_main.py

@@ -56,7 +56,10 @@ except ImportError:
 log = getLogger(__name__)
 
 class SAT(service.Service):
-    def __init__(self):
+    def _init(self):
+        # we don't use __init__ to avoid doule initialisation with twistd
+        # this _init is called in startService
+        log.info(f"{C.APP_NAME} {self.full_version}")
         self._cb_map = {}  # map from callback_id to callbacks
         self._menus = (
             OrderedDict()
@@ -534,6 +537,7 @@ class SAT(service.Service):
             self.memory.purgeProfileSession(profile)
 
     def startService(self):
+        self._init()
         log.info("Salut à toi ô mon frère !")
 
     def stopService(self):