function _sanitizeRawContent(content) {
    // Get this, 2 spaces in a content editable actually converts to:
    // 0020 00a0, meaning, "space no-break space". So, manually convert
    // no-break spaces to spaces again before handing to marked.
    // Also, WebKit converts no-break to unicode equivalent and FF HTML.
    return content.replace(/\u00a0/g, ' ').replace(/&nbsp;/g, ' ');
  }
Converts the 'raw' format of a file's contents into plaintext
@param   {string} content Contents of the file
@returns {string} the sanitized content