Bug: absURL to relURL

[pacollins]

Description

Change all absURL to relURL

Motivation and Context

Fixes #80

How Has This Been Tested?

Hugo Version: v0.3

Browser(s): Chrome

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation, including theme.toml, accordingly.
• I have read the Contributing Document.

[VeitSanner]

@pacollins, maybe my description has not been accurate enough. This applies not only to the links in header.html and footer.html where actually absURL ist used but also to sitebar.html and other places where the absolute URL is used.

[pacollins]

@VeitSanner - I actually had to revert because I noticed this, had to drive home and was going to address this in your thread.