Maybe the last step to eliminate the ContributionTracking extension
- Add $wgDonationInterfaceFundraiserMaintenance to DonationInterface's extension.json to replace $wgContributionTrackingFundraiserMaintenance
- update references throughout code
- Move Special:FundraiserMaintenance from ContributionTracking extension to DonationInterface extension
- Move i18n strings from ContributionTracking extension to DonationInterface extension