allow locales to change without changing tabs.

[blancoj]

Fixes #3766

The changes here will allow users to change the language locale values on pages where there are tabs without losing the tab setting. The only page where this will not work is the home page because the home page has two separate tab areas, and so it would be quite complicated to handle this on the home page. We discussed this at our standup.

Guidance for testing, such as acceptance criteria or new user interface behaviors:

• Login as Admin so that you have access to all the pages.
• You will want to go to all the pages where there are tabs. Here is a list of them: Edit Work page Edit Collection page Edit File page Edit File version page Edit Collection Type page Manage Submissions Manage Embargoes Manage Leases Configuration ==> Settings ==> Content Blocks Configuration ==> Settings ==> Pages *In these pages, you will want to change the locale and notice that the tab does not change.

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