Software wallet module quality-of-life improvements

[rdig]

This issue is here to track small improvements that could be made to the software wallet module, but that are not currently urgent, so they are relegated to the backlog.

Improvements:

• Check for erroneous / similar prop names (when passed in as arguments). Eg: password vs. pasword. See: https://github.com/JoinColony/colony-wallet/blob/bb2d586374e30b03a108f418c742420757ae826c/src/software.js#L52-L58
• When opening the wallet, detect if a method was passed in, but it was invalid, and warn the user about it. See: https://github.com/JoinColony/colony-wallet/blob/bb2d586374e30b03a108f418c742420757ae826c/src/software.js#L282-L313