results-back-button in cris-layout

References

Add references/links to any related issues or PRs. These may include:

Fixes #32

Description

Port the results-back-button from Dspace 7.5 to the cris layout. https://github.com/DSpace/dspace-angular/pull/1995

Instructions for Reviewers

List of changes in this PR:

add the back to results search buttons beneath the breadcrumbs
go to search or mydpace and click on some search result. The button should be shown.
call the item directly or by some referenced item. The button is not shown.

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Checklist

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[x] My PR is small in size (e.g. less than 1,000 lines of code, not including comments & specs/tests), or I have provided reasons as to why that's not possible.
[x] My PR passes ESLint validation using yarn lint
[ ] My PR doesn't introduce circular dependencies (verified via yarn check-circ-deps)
[ ] My PR includes TypeDoc comments for all new (or modified) public methods and classes. It also includes TypeDoc for large or complex private methods.
[ ] My PR passes all specs/tests and includes new/updated specs or tests based on the Code Testing Guide.
[ ] If my PR includes new libraries/dependencies (in package.json), I've made sure their licenses align with the DSpace BSD License based on the Licensing of Contributions documentation.
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4Science / dspace-angular