LT-332: Fixed tool color and shadow for target tool. Moved client-only utilities to client-folder in viewerbase to speed up reloading

Packages/ohif-viewerbase/client/lib/toggleDialog.js

@@ -0,0 +1,6 @@
+toggleDialog = element => {
+    const $element = $(element);
+    const isClosed = $element.hasClass('dialog-open');
+    $element.toggleClass('dialog-closed', isClosed);
+    $element.toggleClass('dialog-open', !isClosed);
+};