ANW-1942 port search spec from selenium to capybara

[thimios]

Description

Related JIRA Ticket or GitHub Issue

https://archivesspace.atlassian.net/browse/ANW-1942

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [ ] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have read the CONTRIBUTING document.
• [ ] I have authority to submit this code.
• [ ] I have added tests to cover my changes.
• [ ] All new and existing tests passed.