* Add wifi.sta.clearconfig(). Adjust password validation to match 2.0.0 SDK rules (no min length enforced, i.e. for WEP)
* Updat comments about WEP key not having a minimum
* Documentation: add note about node.restore() to wifi.sta.clearconfig() docs, and add SDK verbiage to describe what node.restore() impacts.
* Normaliz if statements
* Convert leading tabs to leading spaces for consistency