Newest link is now on the top of the list.
Heroku complained that version 0.1 is invalid.
pagediv width didn't match link list width in intermediate screen size.
Added customized Bootstrap. Active page is now indicated with larger font. Removed print styles from main.css.
Instead of add 2 or 3 hours to date_posted myself, do conversion in query.
Maximum number of pages shown in page number list is 13, current page number surrounded by 6 numbers on both sides. The line starts or ends with an ellipsis if there are more pages.