Update group_title.js
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@ -3,6 +3,7 @@ module.exports = function () {
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if (this.categories.length) {
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if (this.categories.length) {
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return this.categories
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return this.categories
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.filter(c => c)
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.map(category => category.name)
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.map(category => category.name)
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.sort()
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.sort()
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.join(';')
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.join(';')
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