[I18n] Add JavaScript i18n, typo and brand names

[pedro-mendonca]

This PR includes the following:

• Add JavaScript i18n to proper deal with JavaScript strings, including plurals, variables, etc
• Fix statify Statify brand name
• Typo

[stklcode]

Thanks Pedro!

I think we should add wp-i18n to the JS dependencies explicitly. On the dashboard it should be present anyway, so it works without, but relying on that is probably not best practice, is it?`

statify/inc/class-statify-dashboard.php

Lines 126 to 132 in 83a29f1

	wp_register_script(
	'statify_chart_js',
	plugins_url( 'js/dashboard.min.js', STATIFY_FILE ),
	array( 'wp-api-fetch', 'chartist_tooltip_js' ),
	self::$_plugin_version,
	true
	);

ping #253 for another WP 5.0+ argument

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.4% Duplication on New Code

See analysis details on SonarCloud

[pedro-mendonca]

@stklcode I've added the wp-i18n core script to the dependencies as you've requested.
Thanks for the review :)

[stklcode]

LGTM. Thanks @pedro-mendonca for taking care of that!