Profile Gravatar

Backport of the 6.x features to Matomo 5, both versions now share the same code.

The anonymous Matomo avatar is kept for visitors without a hash, so another avatar plugin can provide it (#2). Previously a Gravatar default image was displayed for every visitor.
The visitor profile uses the most recent visit with a valid hash, instead of only the last visit. Only valid SHA256 or MD5 hashes are used.
Matomo Tag Manager: new "Gravatar hash" field in the Matomo Configuration variable, right after User ID, to send the hash from a Data-Layer variable (e.g. sha256_email_address) without Custom HTML tag or code. The field extends the variable instead of replacing it, so it works together with the other plugins extending it, such as Ecommerce Enhanced.
Display the Gravatar picture in the visits log, next to the visitor details (can be disabled in the system settings).
Live.getLastVisitsDetails returns a gravatarUrl for each visit with a hash.
ProfileGravatar.resetGravatarHash tracker method, for logouts.
The hash is sent with every tracking request (events, goals, downloads, outlinks, ecommerce, content tracking, heartbeat), so it can be set after the page view.
Settings and dimension translated into 12 languages.
Documentation: Tag Manager setup, data layer sha256_email_address, HTTP API and PHP Tracker examples, privacy FAQ.

Request parameters are read with Piwik\Request instead of the deprecated Common::getRequestVar, ready for the next Matomo versions.

Plugin translated into 12 languages (Arabic, Chinese simplified and traditional, Dutch, English, French, German, Italian, Japanese, Polish, Portuguese, Spanish).
Plugin homepage moved to https://openmost.com/matomo/extensions/profile-gravatar, support on openmost.com.
Shorter Marketplace description that fits the plugin cards, and campaign parameters on the Openmost links of the README.
Requires Matomo 5.0.0 or later (>=5.0.0,<6.0.0-b1).
README: the plugin description now shows in the Description tab of the Matomo Marketplace.

update: marketplace category and cover

Update screenshot

Update documentation

Update documentation URL

Add system settings

Add extendVisitorDetails in VisitorDetails.php

Add archiver

Plugin setup

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