Started to implement issue #79.

Plugins that contain only a TES4 record will show up in the load order
confirmation dialog with grey text. Plugins with more than just a TES4
record that have accompanying BSAs will show up with light blue text.
Issue #79 fixes.

Forgot that BSAs only need to start with the plugin basename.
Issue #79 work.

This should complete it, I can't think of any other plugin lists that
need colours added. The plugin list in the Editor now displays plugins
with accompanying BSAs in light blue. The grey text for empty plugins is
not used here because record parsing is skipped for the Editor, so they
all appear empty.
Merge branch 'refs/heads/bsa-indicate'