Switch to IndexedDb

[Duddino]

Abstract

Switches to IndexedDb, compared to localStorage, it has the following features:

• Larger capacity
• Versioning system, so we can easily migrate
• Ability to create one database per network, so we don't have to append -testnet to our keys anymore
• Ability to store objects as opposed to strings
• Handles simultaneous accesses (MPW open in multiple windows)
• Async API, as to not block the UI
  have a better database than local storage, by having a larger capacity, a versioning system to easily update the database and doesn't block the UI.

[Liquid369]

tACK cba2b4f
Does as it is intended to, for now, can verify the storage, added MN, verified both networks available, and settings are stored.

Chrome & Safari

[JSKitty]

I'm still able to replicate the 'Promise' issue, this time upon trying an Encrypted Import (an MPW encrypted legacy WIF, to be exact):

Uncaught (in promise) DOMException: Promise object could not be cloned.
    addAccount database.js:69
    InterpretGeneratorResume self-hosted:1819
    AsyncFunctionNext self-hosted:807
    (Async: async)
    guiImportWallet global.js:1159

[JSKitty]

tACK e46e787.

I have tested everything I can think of - every single setting, every import type, with/without encryption, wiped the IndexedDB a billion times between each test, and also ran through the 'migration' many times by wiping IndexedDB while my localStorage data remained.

This is awesome! 🎉
LGTM, this will be a great futureproofing for MPW's 'heavier' capabilities in the future (i.e: Sapling Storage, or Block Headers, etc).

[Liquid369]

tACK e46e787
Still working 🔥

[panleone]

tACK 77643aa really nice work