Loading from storage.xml has been implemented (minimal)

Currently if a storage.xml file is found and has the correct structure,
it will be loaded in to the NoteStore on startup. But there isn't any
proper error handling to report any issues to the user.
Reader - fixed: title is now set to the title of the note rather than
the id.

Signed-off-by: Jamie Redding <jamieredding2694@gmail.com>