Review EN label and apply capitalization properly for 9.2

Check commits since last code freeze on:

• Crowdin source file: https://github.com/nuxeo/nuxeo-platform-lang-ext/blob/master/src/main/resources/crowdin/messages.properties
• Nuxeo Elements: https://github.com/nuxeo/nuxeo-ui-elements/blob/master/i18n/messages.json
• Nuxeo Web UI: https://github.com/nuxeo/nuxeo-web-ui/blob/master/i18n/messages.json
• Admin Center labels: https://github.com/nuxeo/nuxeo/tree/master/nuxeo-features/nuxeo-admin-center/nuxeo-admin-center-core/src/main/resources/i18n
• Wizard labels: https://github.com/nuxeo/nuxeo/tree/master/nuxeo-distribution/nuxeo-startup-wizard/src/main/webapp/WEB-INF/classes
• Drive labels: https://github.com/nuxeo/nuxeo-drive/blob/master/nuxeo-drive-client/nxdrive/data/ui5/i18n.js
• Shibboleth Invitation: https://github.com/nuxeo/nuxeo-shibboleth-invitation/tree/master/src/main/resources/i18n
• Easy share: https://github.com/nuxeo/nuxeo-easyshare/tree/master/src/main/resources/i18n