feat(python): add cwe-79 xss rules #1330

Job	Run time
build (javascript/express)	2m 8s
build (javascript/hapi)	15s
build (javascript/lang)	3m 22s
build (javascript/node)	14s
build (javascript/react)	27s
build (javascript/third_parties)	1m 56s
build (ruby/lang)	4m 6s
build (ruby/rails)	1m 36s
build (ruby/third_parties)	3m 27s
build (java/lang)	2m 58s
build (java/spring)	18s
build (java/android)	13s
build (java/third_parties)	35s
build (php/lang)	5m 0s
build (php/symfony)	56s
build (php/third_parties)	1m 5s
build (python/django)	27s
build (python/lang)	1m 5s
build (go/lang)	1m 0s
build (go/gosec)	2m 8s
build (go/gorilla)	15s
build (go/third_parties)	39s
	34m 10s

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