Tp.Window: fix to show back button properly.
Tp.FingerPracticePage: properly process present_label and input_entry.
Massive Code tide up iteration 1

Tp.HangulLayout: moved src code into future folder. this will be developed when we have chance.
test_core.vala: moved into src/core/ and will be built upon "check"
Tp.Layout: decompose its functions (for provide input method and determination)

Tp.FingerStick, Tp.GaugeGrid, Tp.HandWidget, Tp.TopBar, Tp.Window: uses GtkWidget template facility.

Overall: added more comment. Also, first tide up Makefile.am s