A firefox addon to back the old 'View Image' and 'Search by Image' button in google image search results.
The original Google images functionality is also improved, by providing a customisable button that can also be used to quickly download the image as well as copy it to the clipboard.
The addon can be downloaded for firefox here:
If you can contribute a translation, please create the relevant localisation file by editing the English messages.json file and creating a pull request.