Added conversion routine for populating a Swing TablePane
Added preliminary code for converting TablePane content into .bib database
Fixed conversion, still ugly but works somewhat
Fixed cite key field name, added example refdb with all three types and all optional fields
Added the sample db
Forgot to add optional fields to Book
Added buttons to add and delete selected row
Added check in row removal
Add maven assembly plugin to pom
Merge branch 'swingui'