[GSOC] new feature for Language Tool

In the line that @SkyCharger001 suggest, I’d like to use LT in the Firefox window that the Image Reader add-on opens when I do OCR to images. I usually use it for Light Novel (Japanese) and manga translation, where OCR and volunteer people that do their translations, makes lots of mistakes.

Of course should be a nice feature to have Image Reader integrated in the tabs, so when you are reading a manga, and you see a mistake, you can have a text area under it to suggest a correction or better translation, but I suppose it is a task of the Image Reader support team. This could help to collaborative fan translation.