Change banner on landing page of search.libraries.emory.edu

[lovinscari]

Please remove the current banner on search.libraries.emory.edu regarding the emergency maintenance and replace with "As we continue to improve the NEW Library Search tool, please send any questions or feedback to librarysearch@emory.edu, consult with your subject liaison , or Ask a Librarian. Thank you."

[bwatson78]

PR made: https://github.com/emory-libraries/blacklight-catalog/pull/1206