Update dependencies (#228)

* chore(package): update react-redux to version 5.0.3

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* chore(package): update style-loader to version 0.13.2

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* chore(package): update react-modal to version 1.7.2

Closes #151

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* chore(package): update postcss-loader to version 1.3.3

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* chore(package): update babel-loader to version 6.4.0

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* chore(package): update css-loader to version 0.26.4

Closes #133

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* Trust babel for the future