[UPD] .gitignore, ignore keys module.
[UPD] app.yaml, add webapp2 library.
[UPD] Change file encoding from emacs to vim style.
[UPD] Remove useless imports.
[UPD] Refactor secret keys, moved to a new file.
[DEL] Useless prints.
[UPD] Refactor templates.
[UPD] Refactor search class.
[ADD] First steps with ndb.
[UPD] Refactor ingredients class.
[UPD] Refactor shopping list class.