Fin modules of NDTrans in place, but refactoring in needed

src/experimental/RGLBaseFin.gf

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+concrete RGLBaseFin of RGLBase = 
+
+-- modules in Grammar, excluding Structural, Verb, Sentence, Question
+----  Tense,
+  NounFin - [PPartNP],               -- to be generalized
+  AdjectiveFin,
+  NumeralFin,
+  ConjunctionFin,
+  AdverbFin,
+  PhraseFin - [UttS],
+----  Sentence,
+----  Question,
+  RelativeFin,
+----  Idiom [NP, VP, Cl, Tense, ProgrVP, ExistNP, SelfAdvVP, SelfAdVVP, SelfNP], ---- why only these?
+
+  SymbolFin [PN, Symb, String, CN, Card, NP, MkSymb, SymbPN, CNNumNP] ;          ---- why only these?
+
+----  Construction,
+----  Extensions,
+----  Documentation ;