chore: Clean up unused files, imports, and work on getting end-to-end tests and unit tests running (#2272)

platform/ui/src/components/StudyBrowser/StudyBrowser.jsx

@@ -54,6 +54,7 @@ const StudyBrowser = ({
               onClick={() => {
                 onClickStudy(studyInstanceUid);
               }}
+              data-cy="thumbnail-list"
             />
             {isExpanded && displaySets && (
               <ThumbnailList
@@ -72,7 +73,7 @@ const StudyBrowser = ({
 
   return (
     <React.Fragment>
-      <div className="flex flex-row items-center justify-center h-16 p-4 border-b w-100 border-secondary-light bg-primary-dark">
+      <div className="flex flex-row items-center justify-center h-16 p-4 border-b w-100 border-secondary-light bg-primary-dark" data-cy={"studyBrowser-panel"}>
         <ButtonGroup
           variant="outlined"
           color="inherit"