Improvement : add the rectangle shape for graphical question

[CPASimUSante]

The square is too much restrictive as a shape. I can't for instance use it to ask for "Click on the Claroline workspace toolbar" This is much expected. thanks

Oval could be great too, but still not as useful and versatile as the rectangle

[marion42]

We have other persons which ask this too. But it's an important work, so it's predicted but we don't know when.