[DIFE-403] User account - Hide section and fields

Hide “Personal URL” and “About” fields from the “Account“ section, and “My interests“ section from “My account” page as well. Change the following list of labels accordingly from the “Account” section:

“Your name” → “Real name”

“User name” → “Username“

“Your email“ → “Email address“

Note: Prepare a script/command to set all this fields to NULL/empty in the database for users that have it filled in, and to run it when needed/required.