Add glossary for learners

[ostephens]

How could the content be improved?

We are missing a glossary for this lesson currently. An initial glossary should be added in /learners/reference.md. Glossary entries should:

• Provide quick and easy to digest definitions
• Link to OpenRefine documentation if there is a fuller definition or set of documentation for a term
• Link to Wiktionary and/or ODLIS where appropriate

The lessons should be reviewed to create an initial glossary. Suggested terms include:

• delimiter
• parsing
• record

Definitions should be written using markdown like:

[delimiter]{#delimiter}
:  FIXME definition to go here + check to see if mentioned in OR docs and if so, link

[parsing]{#parsing}
:  FIXME definition to go here + check to see if mentioned in OR docs and if so, link

[record]{#record}
:  FIXME quick definition to go here + link to OpenRefine docs for fuller explanation

This will allow linking between terms in the glossary

[jas58]

Hi Owen, I'm adding this as a demo to an idea from today's Maintainer meeting. We can talk next month or so.