I realized your initial question is not trivial. There are different contexts that are appropriate for jsxgraph and geobebra. It might be good to have the extra functionality of geobebra available to teachers and as assignments for students. However, I question whether it may be appropriate to have geobebra easily accessible in a forum where a reader might have forty java applets on a page. Geobebra has a much higher perfomance cost than than jsxgraph. The two buttons are not the same. Previously this sort of thing was controlled by the teacher/administrator through the enableing/disabling of filters (Dragmath/TeX filter). The buttons that you have are presumably controlled by an administrator by not installing the editor plugin, but it should be controlled also by the teacher enabling the student to see both, either or neither of the buttons.