Record bucket egGrid should disable the "Merge Records" action unless two or more records are selected

[Jane Sandberg]

On current master and 3.1.0. Merging 1 record doesn't really make sense, and the Merge Records modal enforces this. However, it would be better to not even allow the option of opening the modal until the user has selected two or more items from the record bucket grid.

Steps to re-create:
1) In Web client, go to Cataloging > Record buckets.
2) Open or create a bucket with one or more records in it.
3) Select one record from your bucket. Right-click on your record or click on the Actions drop-down.
4) "Merge Selected Records" is enabled. Expected behavior is that it be disabled.

[Jane Sandberg (sandbergja)]

I created a branch to fix this, called user/sandbergja/lp1760599_disable_merge_records_unless_multiple_records_selected

Here's a link: http://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/sandbergja/lp1760599_disable_merge_records_unless_multiple_records_selected

Here are testing instructions from the commit message:

1) Create a bucket.
2) Select one record from your bucket. Right-click on your record or click on the Actions drop-down.
3) Note that "Merge Selected Records" is clickable.
4) Apply this commit.
5) Repeat steps 2-3. Note that "Merge Selected Records" is no longer
clickable, unless you select two or more records.

[Rogan Hamby (rogan-hamby)]

Works as advertised. Sign off pushed to user/rogan/lp1760599

[Galen Charlton (gmc)]

Pushed to master, rel_3_3, rel_3_2, and rel_3_1. Thanks, Jane and Rogan!