refactor: Move IDs inside collection

[Anton Tymczenko]

*bug: * When User at collectionNew leaves the page, should not save to localStorage.

*solution: *

• Make all collections have IDs inside of itself.
• Put some counter in state, increment it on every added collection to collections array
• CollectionNew component in its created lifecycle hook should create a collection with id=temporary in state . If it is already there – overwrite it with blank collection
• CollectionNew shoud save id=temporary collection to collections with some other, numbered, ID. It should save on @save event received from child CollectionEdit