Use exactly enzyme 3.1.17

[openorclose]

Compatibility issues with 3.1.18

[coveralls]

Pull Request Test Coverage Report for Build 1136

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 26.093%

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Totals
Change from base Build 1132:	0.0%
Covered Lines:	922
Relevant Lines:	2994

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💛 - Coveralls

[podocarp]

^3.1.17 works for me though I know 3.1.18 breaks it. Could it just be that the 3.1.18 version is being kept from previous installations despite specifying 3.1.17?

[openorclose]

It could be a npm/yarn version difference too, when deciding what version of enzyme to use. I'll try cloning again and see what ^3.1.17 gets

[martin-henz]

This turns out to be necessary to get the frontend running.