Add "clone" or sprite name to "touching []" boolean reporter options

[thisandagain]

Follow-up from #377

Discussion

In Scratch 3.0 the "touching" boolean reporter can distinguish between itself and a clone. This leads to the question of if this new functionality should be exposed to Scratchers in the form of a new default drop-down option for the "touching []" boolean reporter.

Demo

http://llk.github.io/scratch-vm/#138856666

Reference

[thisandagain]

Moved to scratchfoundation/scratch-blocks#789