Remove unused translation keys

www/common/translations/messages.json

@@ -430,7 +430,6 @@
     "register_mustRememberPass": "We cannot reset your password if you forget it. It's very important that you remember it! Please check the checkbox to confirm.",
     "register_whyRegister": "Why sign up?",
     "register_header": "Register",
-    "register_explanation": "<h3>Lets go over a couple things first:</h3><ul class='list-unstyled'><li><i class='fa fa-info-circle'> </i> Your password is your secret key which encrypts all of your pads. If you lose it there is no way we can recover your data.</li><li><i class='fa fa-info-circle'> </i> You can import pads which were recently viewed in your browser so you have them in your account.</li><li><i class='fa fa-info-circle'> </i> If you are using a shared computer, you need to log out when you are done, closing the tab is not enough.</li></ul>",
     "register_writtenPassword": "I have written down my username and password, proceed",
     "register_cancel": "Cancel",
     "register_warning": "<i class='fa fa-warning'></i> Warning",
@@ -631,20 +630,7 @@
     "topbar_whatIsCryptpad": "What is CryptPad",
     "whatis_title": "What is CryptPad?",
     "whatis_collaboration": "Private Collaboration",
-    "whatis_collaboration_p1": "With CryptPad, you can make quick collaborative documents for taking notes and writing down ideas together. When you sign up and log in, you get file upload capability and a CryptDrive where you can organize all of your pads. As a registered user you get 50MB of space for free.",
-    "whatis_collaboration_p2": "You can share access to a CryptPad document simply by sharing the link. You can also share a link which provides <em>read only</em> access to a pad, allowing you to publicise your collaborative work while still being able to edit it.",
-    "whatis_collaboration_p3": "You can make simple rich text documents with <a href=\"http://ckeditor.com/\">CKEditor</a> as well as Markdown documents which are rendered in realtime while you type. You can also use the poll app for scheduling events with multiple participants.",
-    "whatis_zeroknowledge": "Zero Knowledge",
-    "whatis_zeroknowledge_p1": "We don't want to know what you're typing and with modern cryptography, you can be sure that we can't know. CryptPad uses <strong>100% client side encryption</strong> to protect the content that you type from us, the people who host the server.",
-    "whatis_zeroknowledge_p2": "When you sign up and log in, your username and password are computed into a secret key using <a href=\"https://en.wikipedia.org/wiki/Scrypt\">scrypt key derivation function</a>. Neither this key, nor the username and password are ever sent to the server. Instead they are used on the client side to decrypt the content of your CryptDrive, which contains the keys to all pads that you are able to access.",
-    "whatis_zeroknowledge_p3": "When you share the link to a document, you're sharing the cryptographic key for accessing that document but since the key is in the <a href=\"https://en.wikipedia.org/wiki/Fragment_identifier\">fragment identifier</a>, it is never directly sent to the server. Check out our <a href=\"https://blog.cryptpad.fr/2017/07/07/cryptpad-analytics-what-we-cant-know-what-we-must-know-what-we-want-to-know/\">privacy blog post</a> to learn more about what types of metadata we do and do not have access to.",
     "whatis_drive": "Organization with CryptDrive",
-    "whatis_drive_p1": "Whenever you access a pad in CryptPad, the pad is automatically added to your CryptDrive in the main folder. Later on, you can organize these pads into folders or you can put them in the trash bin. CryptDrive allows you to search through your pads and to organize them whenever you want, however you want.",
-    "whatis_drive_p2": "With intuitive drag-and-drop, you can move pads around in your drive and the link to these pads will stay the same so your collaborators will never lose access.",
-    "whatis_drive_p3": "You can also upload files in your CryptDrive and share them with colleagues. Uploaded files can be organized just like collaborative pads.",
-    "whatis_business": "CryptPad for Business",
-    "whatis_business_p1": "CryptPad's Zero Knowledge encryption multiplies the effectiveness of existing security protocols by mirroring organizational access controls in cryptography. Because sensitive assets can only be decrypted using user access credentials, CryptPad is less valuable as a target when compared to traditional cloud services. Read the <a href='https://blog.cryptpad.fr/images/CryptPad-Whitepaper-v1.0.pdf'>CryptPad Whitepaper</a> to learn more about how it can help your business.",
-    "whatis_business_p2": "CryptPad is deployable on premises and the <a href=\"https://cryptpad.fr/about.html\">CryptPad developers</a> at XWiki SAS are able to offer commercial support, customization and development. Reach out to <a href=\"mailto:sales@cryptpad.fr\">sales@cryptpad.fr</a> for more information.",
     "policy_title": "CryptPad Privacy Policy",
     "policy_whatweknow": "What we know about you",
     "policy_whatweknow_p1": "As an application that is hosted on the web, CryptPad has access to metadata exposed by the HTTP protocol. This includes your IP address, and various other HTTP headers that can be used to identify your particular browser. You can see what information your browser is sharing by visiting <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https://www.whatismybrowser.com/detect/what-http-headers-is-my-browser-sending\" title=\"what http headers is my browser sending\">WhatIsMyBrowser.com</a>.",
@@ -691,7 +677,6 @@
     "features_f_storage1": "Personal storage ({0}GB)",
     "features_f_storage1_note": "Documents stored in your CryptDrive are not deleted for inactivity",
     "features_f_register": "Register for free",
-    "features_f_register_note": "No email or personal information required",
     "features_f_reg": "All registered user features",
     "features_f_reg_note": "With additional benefits",
     "features_f_storage2": "Extra storage space",