[experiments] Little misleading web interface

I find the web interface a little misleading when you set up an experiment. After one chooses a block, 4 buttons appear that enables you to modify parameters, view algorithm, etc. The black button means "Modify algorithm parameters specifically for this block": After you "open" the menu, icon changes, intuitively it feels that pressing the button would just close the algorithm parameter selection menu (for 2 months I assumed this), but in reality this means "reset algorithm on this block to their default values":

IMHO it would be convenient that the user can close the "algorithm parameter selection menu" without parameter reset (imagine that you are working with a large size toolchain with 10-15 blocks, and you want to change the slot count for each of the blocks - if you must keep open all the menus, the already complicated algorithm setup page becomes non-transparent). Also, an additional fifth button for reset should be introduced for each block.