ui: versions comparing improvements

When comparing UI/daemon versions to see if they're compatible, we only
use the first 2 components (1.7.xxx), so discard the rest to allow
different versions (1.6.5.1, 1.6.5-1, 1.6.5-rc1, etc)

ui/opensnitch/utils/__init__.py

@@ -258,8 +258,8 @@ def show(help_str):
 class Utils():
     @staticmethod
     def check_versions(daemon_version):
-        lMayor, lMinor, lPatch = gui_version.split(".")
-        rMayor, rMinor, rPatch = daemon_version.split(".")
+        lMayor, lMinor, lPatch = gui_version.split(".", 2)
+        rMayor, rMinor, rPatch = daemon_version.split(".", 2)
         return lMayor != rMayor or (lMayor == rMayor and lMinor != rMinor)
 
     @staticmethod