handle wallet address change gracefully do not require reload

[Viterbo]

Fixes #490

Description

The PR includes three different parts:

• removal of the legacy code (related to the login process and not part of the Antelope Wallets solution)
• partial migration of some Antelope events (onLoggedIn and onLoggedOut)
• refactor the previous login and logout process by subscribing to those events

With those changes, now the Antelope Wallets are the only way to log in and out, and that makes the internal subscription to the provider's accountChange event, to actually work. Because now using the Antelope library to log in to the newly detected account, will end up in a handler subscribed to the onLoggedIn event, and therefore the site will reflect the new state.

Test scenarios

See the video: Metamask-change-account--Teloscan.webm

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have cleaned up the code in the areas my change touches
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules
• I have checked my code and corrected any misspellings
• I have removed any unnecessary console messages
• I have included all english text to the translation file and/or created a new issue with the required translations for the currently supported languages
• I have tested for mobile functionality and responsiveness
• I have added appropriate test coverage

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