HTML reports should be dynamically sortable

[Dan Scott]

Currently, HTML reports are static tables that are sorted in the order in which the columns were output, so the first column determines the sort order of the table.

While we offer CSV and Excel formats for manipulation of the data, that's overkill for many HTML reports would benefit by being dynamically sortable--for example, circulation reports that let you click on the header to sort in descending instead of ascending order for total fines, or to sort by last name instead of first name, etc.

Luckily this is easily accomplished with modern JavaScript libraries. If we tweak the HTML just slightly, and include a library like sortable (https://github.com/hubspot/sortable - MIT-licensed, so compatible with being bundled with Evergreen), we can have dynamically sortable reports with just 3K of JavaScript.

[Dan Scott (denials)]

Pushed user/dbs/lp1516867_sortable_html_report to working for the amusement of all. We're running this in production because it's a minor delta to clark-kent.pl and a nice overall win.

http://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/dbs/lp1516867_sortable_html_report

[Dan Scott (denials)]

I've added another commit per Galen's request to locate this under Open-ILS/web/js/sortable (and thus /js/sortable in HTTP requests) rather than under Open-ILS/web/sortable.

[Galen Charlton (gmc)]

I've pushed to collab/gmcharlt/lp1516867_sortable_report_output a signoff branch that contains Dan's patches, squashed together, and a follow-up patch that sets a limit on how large the report output can be and still have dynamic sorting of the table enabled.

http://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/collab/gmcharlt/lp1516867_sortable_report_output

[Ben Shum (bshum)]

Works for me, thanks Dan and Galen! Pushed to master for 2.10-beta.