Add archived notes scene.
Introduce NoteIndexReader.
Read 100 items at once.
Add the archive scene.
Enables to load note indexes automatically.
Modify the load count.
Modify coding style.
Implements the archive notes scene.
Hides action buttons of the archive scene.
Rename NoteIndex to NoteIndexCollection
NoteListView refers to Notepad's note_index.
Implements archived files.
Hide history page.
Merge branch 'feature/deleted_notes_scene' into develop