Add a button to expand/retract everything

[joserobjr]

Please, add a button to expand/retract everything, it's a pain to analyze plugins with big call chains, I'm trying to investigate my bungeecord plugin and bungee fires the event directly from the netty worker threads, there are 16 threads on running on my server and it is a pain to reach my actual code in each thread individually....

Expanding everything by hand is like playing Cookie Clicker...