Code Migration

- Migrated taskd JSON parser into task, to provide encode/decode
  capability to Task::composeJSON.
- Migrated taskd utf8 code, replacing old unused code.
- Added unit tests or JSON.
- Migrated Tree updates from taskd.

src/Nibbler.h

@@ -47,6 +47,10 @@ public:
   bool getUntilEOL (std::string&);
   bool getUntilEOS (std::string&);
 
+/*
+  bool getAllOneOf (const std::string&, std::string&);
+*/
+
   bool getQuoted (char, std::string&, bool quote = false);
   bool getInt (int&);
   bool getHex (int&);