fix jquery include
page view tracking

* add new column 'page_views' to page table
* function logPageView to increment page_views
* display page_views at bottom of page
make allpages a table, with page_views column

also small fix to allusers.php
styling changes

light gray background
remove <hr> from footer
tweak .page-header border
lowercasing
more lowercasing, and hide edit comment label
fix changePassword to use PasswordHash.php