webstaff: protect more modals from accidental closures

[Galen Charlton]

By default, Bootstrap modals are dismissed if the user clicks outside of them. Sometimes, that's OK; if the modal is only providing some sort of information message, providing lots of ways to get rid of it can be handy.

More often (?), though, we don't want that behavior, as accidentally dismissing the modal can result in losing work — for example, consider a modal that embeds the MARC editor.

We should consider adding the "backdrop: 'static'" option as a matter of course to all modals.

Evergreen master

[Cesar V (cesardv)]

I have a working branch for this here...

http://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/cesardv/lp1689325_enable_backdrop-static_modals

Still working on testing every modal, making sure the new setting won't causes usability/UI issues.

[Cesar V (cesardv)]

So far, I've run into (and fixed) a bug 1722899 (which was exacerbated by the changes to the modals here.)

Perhaps a better approach (if we feel necessary) in order to thoroughly test this would be to generate a shared spreadsheet of all the affected modals and spread the testing among a couple of volunteers.

Might be overkill to test this way, however, yet it might help identify perhaps which modals would benefit from being able to be dismissed by clicking outside of it (in the backdrop).

[Mike Rylander (mrylander)]

Picked into master for broader testing and refinement. Thanks, Cesar!