It's not Anush . Full name is Anuj Goyal and email id is :- anujg935@gmail.com

i think its accepted but not commited .if required any changes or if its not useful than please let me know

i think that if the user sees a different icon on only the 3 options than the user will definitely try to hover over it either intentionally or unintentionally .and will get to know that we get the explanation on hovering over.what do you think .So i,don't think there is any need of clickable icon as far as i think.please provide your feedbacks .

the above are the changed and the icon is added to label with tooltip .

Now the aspect ratio of the curve widget is square. you can checkout.
and currently working on the adding icon .

I think for merging the ui file the only option is that anyone of us have to make UI file by taking into account of all the ui files