Update serializer to use denser base-36 serialization.

Also always use semicolons to terminate ints so that it's easier to parse (esp. from javascript).
Update builtin dictionary to new, denser format.
Split out serialization logic into Wikipedia extrator (reduce DLL size).

--HG--
rename : A-vs-An/A-vs-An-DotNet/Internals/NodeSerializer.cs => A-vs-An/A-vs-An-DotNet/Internals/NodeDeserializer.cs
rename : A-vs-An/A-vs-An-DotNet/Internals/NodeSerializer.cs => A-vs-An/WikipediaAvsAnTrieExtractor/NodeSerializer.cs
extra : amend_source : abb1a362bf8abc511c25d6052e59156e0d0c7237
Less functional, but shorter code for parsing.
Update converter to use new packages.