glances 3.1.4.1: checks for update on every run

[lhaeger (Lothar Haeger)]

glances calls home on every run and checks for updates:

$ glances
You are using Glances version 3.1.4.1, however version 3.1.5 is available.
You should consider upgrading using: pip install --upgrade glances

This should be disabled if possible when installed via MacPorts (it seems as if glances.conf has a parameter to control this behaviour).