Consistency of option names

[dcastro]

Clarification and motivation

BLOCKED BY #118

The naming scheme we used for config options / command-line options seems to be somewhat inconsistent. We often use the imperative mood (e.g. ignoreRefs, checkLocalHost, ignoreAuthFailures), but sometimes use the past tense (e.g. ignored, notScanned).

We should use a consistent naming scheme.

In #118 (comment) I suggested deleting ignored and having only notScanned. If we do that, then we can rename notScanned to ignore, which would solve this issue.

If we end up going in a different direction in #118, then we should have a discussion about how to rename these two options.

Acceptance criteria

We consistently use the imperative mood when naming config options / command-line options.

[dcastro]

This will be addressed in #171