Make genGraphs recursively chmod u+rwx, go+rX html/ directory
Make genGraphs recursively chmod u+rwx, go+rX html/ directory

Every time I make graphs and try to browse them via a local web share,
I have to re-chmod the directory by hand.  This commit proposes doing
it automatically.  My Python is probably terrible, characteristically.

CoryMcCartan/chapel,hildeth/chapel,hildeth/chapel,CoryMcCartan/chapel,chizarlicious/chapel,hildeth/chapel,CoryMcCartan/chapel,CoryMcCartan/chapel,chizarlicious/chapel,hildeth/chapel,hildeth/chapel,chizarlicious/chapel,CoryMcCartan/chapel,chizarlicious/chapel,CoryMcCartan/chapel,hildeth/chapel,chizarlicious/chapel,chizarlicious/chapel,CoryMcCartan/chapel,hildeth/chapel,chizarlicious/chapel