fix: consider paid status at erp sum calculation

See merge request !78

(cherry picked from commit 9d3ffdf8)

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See merge request !73

fix: use salutation locale at ErpUser->getName()

See merge request !72

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See merge request !71

fix: erp requires php8

See merge request !70

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See merge request !69

fix(Comments): correct sorting

See merge request !68

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See merge request !67

Dev

See merge request !66

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See merge request !65

fix(ArticleListUnique): exchange rate -> correct start currency

See merge request !64

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See merge request !63

fix(ArticleListUnique): sorting fixed

See merge request !62

feat: erp process object extended

Closes brassberg/ecoyn/tickets#108

See merge request !61

feat: erp process object extended

See merge request !60