These denote fields that are generated but do not actually have any data
associated with them. For example, select options with predicates have a
field generated so that they contribute to the group field count (so that
the group will automatically show/hide appropriately), but those should
never have values associated with them in the bucket.
This was manifesting as a nasty bug: The bucket contained a key for
generated options. When the quote is loaded, the client "empties" the
bucket. In doing so, it set the option value to the empty string, which had
the effect of rendering the dropdown useless---every value was the empty
string!
* src/program/ProgramInit.js (_isKnownType): New method.
(init): Use it and ignore fields with unknown types.
* src/server/Server.js: Add note that we shouldn't have this logic
duplicated between ProgramInit and ProgramQuoteCleaner.
* src/server/quote/ProgramQuoteCleaner.js (_fixGroup): Ignore fields with
unknown types.
(_isKnownType): New method.
* test/program/ProgramInitTest.js: Update existing tests. Add new.
* test/server/quote/ProgramQuoteCleanerTest.js: Test this case.