Change "whitelist" into "allowlist"

Problem/Motivation

There has been quite a few discussion in the tech regarding the terms "whitelist/blacklist" and "master/slave" and personally I've been always on the side of the "it's just a historical term, why bother change it".
However recent events made me think quite a bit on this and I realise that, yes it's only a term, but there are indeed people which are indeed affected by this terminology and on top of that terms like "AllowList" and "BlockList" do not require prior knowledge and are more straight forward.

Some relevant changes:

1. Google: Removing whitelist/blacklist and master/slave from Go
2. Redis: Changing master-slave replication terms with something else
3. Rails Replace use of whitelist with allowlist and blacklist with denylist

Proposed resolution

Change "whitelist" to "allowlist".

Remaining tasks

• Update the code base,
• Add update hook to preserve functionality,
• Update translations where necessary,
• Release change.

<1h3 id="summary-ui-changes">User interface changes

All references to "Whitelist" should be updated to "Allowlist"

API changes

N/A

Data model changes

N/A

Release notes snippet

Updated terminology: <em>whitelist</em> becomes <em>allowlist</em> for better clarity and as more inclusive term.