Adds heater_generic and/or temp_sensors besides extruder/bed (because of the limited space maybe only 1)
Temps are now buttons and act as a shortcut to the temp panel
Adds fan_generic to the fan label and it's now a shortcut to the fan panel
The colors and size of the progress circle were changed to be more subtle.
Margins between items were augmented, because they are buttons now
Adds 3 information pages: move, extrusion and time:
move can be opened with speed or z buttons
time with elapsed/remaining buttons
extrusion with the extrude_factor / flowrate button
These changes allow to define custom code to be run when using the cooldown preset.
Here an example in the configuration:
```
[preheat cooldown]
gcode: M107
```
fix forcefully returning the user from menu to splash when there is no connection to moonraker/klipper
fix a case where the power device was added multiple times to the list
moving the manager should increase startup times
only load it when the user wants to manage networks
network: add ip at the top (fixes#422)
network: always reload the list of networks
wifi: fix network list getting blank
network: make the list more resilient to netinfo errors
Drawing the graph has a high load impact, reduce the interval of redraw
if the user needs instantaneous values, then the list provides it,
the graph is there to provide historical data of behaviour not instantaneous values.
-------- | Load | Note
idle | 0.3 | screensaver
menu | 0.4 | No process update
extrude | 0.6 | updates temp
graph 5s | 0.8 |
graph 1s | 1.2 |
the load is the 15 min mean after about half an hour
Tests carried out on a Pi3A
