Change the tooltip.
Split Algorithm and SAVE button.
"del" node Button should work now.
Fix: delete node but not remove from node_list.
Tweak some UI and CSS, use pseudo-elements(:after) to show assigned channel.
Clean node status at setSelected().
Add functions to get radio ID.
Fix tooltip open bug.
Set channel for 2.4G/5G.
Take applyAlgoResult() out from sendInterestNodes().