1. [NEW] New presentation of article. Currently it is presented by click on a menu option of toolbox at article page. And it can be ON/OFF. (show_new_article_link)
2. [NEW] sci_issues - two forms of sorting: by publication date or issue order (sequential number) (default)
3. [FIX] Presentation of links to text and abstract at the abstract page
4. [FIX] sci_issues - ahead of print duplicated