Add an always-accessible drop zone, instead of Reset & Upload New

[willhains]

First of all, thank you for making such an awesome tool. I use this every day, and it has motivated me to use JMH more, leading to better understanding of the performance of my code.

My current workflow:

1. View benchmark results.
2. Update the code (or the benchmark) and run it again.
3. Menu > Reset & Upload New
4. Drag new JSON files into the drop zone.
5. Repeat.

I think step 3 could be eliminated if there was an always-accessible drop zone. In other words, allow JSON files to be dropped onto the JMH visualizer while it is displaying results.

[jzillmann]

Hey @willhains , think that would be a nice improvement. However I'm not actively working on the project since some time, so I just marked the ticket with help-wanted.

In the meantime... you could also simply refresh the page which has the same effect as Reset & Upload New. So just hit cmd-r or something like this!