Remove Spikes CLI interface is unable to provide localized spike, gap fill or float operations

# Describe the bug

Due to a logic bug, the removespikes.php script is unable to fix gaps, or spikes inside of a time window.

## To Reproduce

Attempt to use the script using the --outlier-start and --outlier-end options.

## Expected behavior

The removespikes.php should work in these cases.
