Add NoteIndexStorage class.
This is used for saving and loading the note index data using nedb.
Save the note index via nedb.
Merge branch 'feature/Use_nedb_for_storing_note_index' into develop
Enables to delete notes by pressing delete key.
Enables to delete a note by clicking the delete button in the note list pane.
Merge branch 'feature/note_deletion' into develop
Adds the settings button.
Adds a route to the settings scene.
Adds settings scene file.
Implements basic layout.
Add workspace section.
Adds home directory edit field.
Introduce settings file.
Formats the default settings file.
Merge branch 'feature/settings' into develop