Comment 2 for bug 1704873

1. Confirmed basic functionality for tweaking, saving, and applying templates.
2. Confirmed printing via Hatch behaves as expected.
3. Quick code review, no dragons.
4. Confirmed Export generated a sane looking output.
5. I did not test import.

This is an interface I practically never use, so ideally others will test.

==

I pushed a new branch:

http://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/berick/lp1704873-webstaf-print-label-review

1. Includes sign-off for Jason's commit.

2. Adds an extra commit to smooth some UI funkiness. The 'Template' and 'Printer' labels were squashed and partially hidden for me. I reworked the labels to behave more like and/or use input group add-ons so they are attached to their selector widgets and remain visible. This includes adding support for an optional drop-down button label in <eg-basic-combo-box/>