Fixed bug that was causing "Discover" to fail with an
"Error reading log: XGETTRUST NNTP request failed: 480 Identity not found" error
message on FMS. This only happened for deleted identities.

da5f54f86710
Fixed a bug in the display of '-' that was causing horizontal lines to
be rendered incorrectly on the "Discover" page.

Removed some unused files from the build. This should shrink the .jar and .zip.

4f9255d698ae:
Fixed bug on the "Discover" page that caused lines to be drawn incorrectly
in some cases for graphs with rebased versions.

Use .zip instead of .tgz for source release.