configuration in json and offline client support

Program will now work even if some of rpi are offline.
Server settings are now saved in settings.json for easier update on servers.
Uploaded more testing files.
Also slight improvments of formating and comenting of the code

engine.py

@@ -2,14 +2,17 @@ from datetime import datetime
 
 
 class Log():
-    def __init__(self, save_e=True, save_w=False, save_m=False, print_e=True, print_w=True, print_m=False, debug=False):
-        self.save_error = save_e
-        self.save_warning = save_w
-        self.save_messages = save_m
-        self.print_error = print_e
-        self.print_warning = print_w
-        self.print_messages = print_m
-        self.debug_e = debug
+    def __init__(self, settings=None):
+        if settings is None:
+            settings = {"save_error": True, "print_error": True, "save_warning": True, "print_warning": True,
+                        "save_message": False, "print_message": True, "enable_debug": False}
+        self.save_error = settings["save_error"]
+        self.save_warning = settings["save_warning"]
+        self.save_messages = settings["save_message"]
+        self.print_error = settings["print_error"]
+        self.print_warning = settings["print_warning"]
+        self.print_messages = settings["print_message"]
+        self.debug_e = settings["enable_debug"]
 
     def error(self, error):
         if self.print_error: