Fix JS error if with-forms does not exists (#380) #135

Job	Run time
tests_node	18s
Test on Python 3.8 and Django 3.2 on postgres	1m 0s
Test on Python 3.9 and Django 3.2 on postgres	1m 6s
Test on Python 3.10 and Django 3.2 on postgres	58s
Test on Python 3.8 and Django 4.0 on postgres	1m 1s
Test on Python 3.9 and Django 4.0 on postgres	1m 5s
Test on Python 3.10 and Django 4.0 on postgres	1m 11s
Test on Python 3.8 and Django 4.1 on postgres	1m 6s
Test on Python 3.9 and Django 4.1 on postgres	1m 0s
Test on Python 3.10 and Django 4.1 on postgres	56s
Test on Python 3.11 and Django 4.1 on postgres	1m 0s
Test on Python 3.8 and Django 4.2 on postgres	1m 8s
Test on Python 3.9 and Django 4.2 on postgres	1m 9s
Test on Python 3.10 and Django 4.2 on postgres	56s
Test on Python 3.11 and Django 4.2 on postgres	1m 15s
Test on Python 3.12 and Django 4.2 on postgres	56s
Test on Python 3.10 and Django 5.0 on postgres	1m 13s
Test on Python 3.11 and Django 5.0 on postgres	55s
Test on Python 3.12 and Django 5.0 on postgres	1m 11s
Test on Python 3.8 and Django 3.2 on sqlite	1m 2s
	20m 26s

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