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

modes/longitudinal/.webpack/webpack.prod.js

@@ -30,7 +30,7 @@ module.exports = (env, argv) => {
     },
     output: {
       path: ROOT_DIR,
-      library: 'OHIFExtCornerstone',
+      library: 'OHIFModeLongitudinal',
       libraryTarget: 'umd',
       libraryExport: 'default',
       filename: pkg.main,