* playing around * Change extension init and preRegistration signature * Clear test code * Update core index test * Fix test * Tricking the bug * Renaming file back to trick some weird bug
* WIP - Notification Service * add snackbar provider into the main App component * feat: Notification Service * revert unmodified file * Update DicomHtmlViewport.js * update css classnames * revert toolbarRow * fix revert toolbarRow * styles adjustments and hide method * remove unecessary default options * minor fixes * fix long truncated messages * move SnackbarContext to ui project, rename, export