add the wifi manager part for arch linux
add delete function to the wifi manager, add system control for using the wifi_manager, correction of minor bugs.
Update files_module_handlers.js

remove PLATFORM variable (not used).
Update db.js
Update machine.js
some corrections.

- add a "none" debug level (to get level directly from log.js )
- add tmp folder in settings exports
- correct wifi manager bug.
add logger name to the log
little bug fix
remove the g2 dependency in gcode.js

use the more generic 'driver' variable, inherited from the machine
model.
avoid contextual menu for touch screens.

Signed-off-by: jlucidar <jlucidar@gmail.com>
Merge remote-tracking branch 'origin/wifimanager'