Discrepancy on template structure and README

[lv70]

The text in app/templates/README.md includes

The template files are organized into the following directories:
    common            # Common base template files and macros
    flask_user        # Flask-User template files (register, login, etc.)
    pages             # Template files for web pages

However there is only a common and main folder, and a main/register.html that I think, is never used.