- Upgraded PluginFactory URL. - Install applets and templates as writable by owner by default, as the whole   point is to be able to tinker with 'em. - Don't clobber any already-installed demo.cfg file.
- Upgraded PluginFactory URL.
- Install applets and templates as writable by owner by default, as the whole
  point is to be able to tinker with 'em.
- Don't clobber any already-installed demo.cfg file.

--HG--
extra : convert_revision : svn%3Ab4f3b83b-18d6-0310-a2de-c8f40de7a630/trunk%40215

ged/arrow,ged/arrow