We assert that the local html directory is no longer used. Remove machinery
related to its use, notably HelpUseLocal, the code that checks it and the
code that sets and examines special flag URL "__local".
Before actually killing off the local skins/default/html directory, make
viewer_manifest.py rename it but continue packaging it as html.old. If this
doesn't cause a panic, we can proceed with removing it entirely.
This appears at the bottom of the Help Browser floater while a page is
loading. I also cleaned up the XUI file a little and removed some
unused strings.
returned no media plugin for text/html (NULL dereference), which seems
to be happening in viewer-2.0.0-3 for me at the moment.
Clearly there's not too much to do if we can't display HTML, but this
fix will at least stop the help browser from crashing.
Nat Goodspeed