Fixed templates, deleted test devices, made gpu monitoring work. TODO: fix tests
Some cosmetics.
Merge branch 'server' into niksh-dev

Conflicts:
	nms_app/alerts.py
	nms_app/devices.py
	nms_app/scripts/collector_watchdog.sh
	nms_site.db
	scripts/collector_watchdog.sh
Eliminated limit of 50 alerts on main page
something changed
Eradicated a bug
Added standalone test of all devices
merge, nodes_check - ok