primitivus: SIGINT is now ignored, APP_QUIT key/menu or :quit command must be used to quit Primitivus

frontends/src/primitivus/primitivus

@@ -42,6 +42,7 @@ from sat_frontends.tools.misc import InputHistory
 from sat_frontends.constants import Const as commonConst # FIXME
 from sat_frontends.tools.jid import JID
 from os.path import join
+import signal
 
 
 class ChatList(QuickChatList):
@@ -195,6 +196,9 @@ class PrimitivusApp(QuickApp, InputHistory):
 
         self.x_notify = Notify()
 
+        # we already manage exit with a_key['APP_QUIT'], so we don't want C-c
+        signal.signal(signal.SIGINT, signal.SIG_IGN)
+
     @property
     def mode(self):
         return self.editBar.mode