Bug 7969 - select all / unselect all on fines page

This patch adds "select all" and "clear all" links to the pay fines page
so that checkboxes which are all checked by default can be easily
unchecked and selected individually.

This patch also moves the column of checkboxes to the start of the table
in order to conform to common practices.

To test, vew the "Pay fines" page for a patron who has outstanding
charges on their account. Confirm that the "select all" and "clear all"
links work correctly and that payment and writeoff functionality is not
changed.

Signed-off-by: Nicole C. Engard <nengard@bywatersolutions.com>
All tests pass

Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>
Merge branch 'bug_7969' into 3.12-master