* src/server/quote/ProgramQuoteCleaner.js (clean): Add docblock.
Replace previous linked group cleaning with call to `_fixGroup'.
(_fixGroup): New method. Similar logic to previous linked group cleaning,
except that fields are never truncated.
(_fixLinkedGroups, _getLinkedIndexLength): Remove methods.
(_getGroupLength): New method determining group size from leader length,
which also accounts for linked groups.
* test/server/quote/ProgramQuoteCleanerTest.js: New test case.