Remove duplicate gitignore entry
Ignore Vim swap files
Add IDEA copyright configuration
Apply copyright to Java sources

Per http://www.gnu.org/licenses/gpl-howto.html
Apply copyright to FXML sources

Per http://www.gnu.org/licenses/gpl-howto.html
Convert sources to unix line endings

Performed with the following command:

    $ git ls-files | xargs dos2unix
Add IDEA formatting settings
Apply formatting to Java sources

This is essentially the default IDEA formatting settings, with one tweak
made to allow same-line field annotations (useful particularly in the
case of the @FXML annotation)
Apply formatting to XML sources
Wrap lines at 120 chars
Adjust line wrapping by hand
Format else statements on new line

Based on Manfred's existing IDEA settings
Organize import statements
Merge branch 'formatting'