Without sorting the list, we had ordinary tiddlers listed before shadow
tiddlers. That meant that as soon as you started to type in a shadow
tiddler it moved up in the list.
The user interface needs some refinements but it shows the basic
principles.
The idea is that the translator would email their modified file, which
would then be merged into the core repo (some additional tools will be
helpful for this).
Fixes#984
