added classes :

AbsDictionaryDB : abstract DataBase class
AbsDictionaryDBShadow : a fill in class to test the chobit without using an actual DB
SharedPrefDB : a shared pref based DB that extends AbsDictionaryDB

updated classes:

to accommodate the AbsDictionaryDB residing in the GrimoireMemento class

Chobit : now has 2 c'tors
Kokoro
GrimoireMemento
MainActivity

:chii: