Some improvements to the Latvian resource grammar

- some missing functions (needed for Phrasebook)
- few bug-fixes (verb paradigms)
- naming, formatting, clean-up

lib/src/latvian/MakeStructuralLav.gf

@@ -9,6 +9,9 @@ oper
   mkSubj : Str -> Subj = \x ->
     lin Subj {s = x} ;
 
+  --mkNP : Str -> ParadigmsLav.Number -> NP = \s,n ->
+  --  lin NP (regNP s n) ;
+
   mkIDet : Str -> ParadigmsLav.Number -> IDet = \s,n ->
     lin IDet {s = \\_ => s ; n = n} ;