Fix invoice being sent in client mode if client is set to default

• Add the ability to add fee to each newly created invoice
• Documents are now shown in modals
• Add trigger option to send only when order is accepted
• Documents now show more details
• Implemented server-side pagination on all tables for better performance
• Add option to send invoice when late fee is added
• Make sure to only send invoices which are unpaid
• Add button for synchronizing documents
• Moved calculator to modal in send center
• Moved document upload to modal in documents page
• Converted UI to single page application for better responsiveness
• Handle errors in data tables
• Code overhaul with automated code quality checks
• Calculator adapts to speeds available for selected country
• Also save sent document ID on send
• Don’t send envelope ID for unsupported countries
• Allow clients to configure invoice delivery from the Client Area
• Implement WHMCS metadata
• Fix calculator documents dropdown not affecting anything
• Fix hook not reacting if the WHMCS option “No Invoice Email on Order” is enabled
• Fix deleted documents remaining in DB
• Fix send mode not respected in invoice list status column

• Added WHMCS v8 and PHP 7.4 compatibility

• Sendcenter now synchronizes with local tables
• Now showing all sent invoices and quotes
• Fixed Print Mode and Address Position settings not working properly

• Show more detailed tracking information
• Fixed sentquotes table not being dropped on module deactivation

• Show spinner and disable button while sending
• Invoice button says Resend if invoice was already sent
• Fixed hooks not working on some systems
• Fixed hooks not working on some systems
• Fixed send to Pingen via invoice no longer working
• Fixed Widget no longer showing up in Admin Roles configuration
• Fixed GUI showing success on failure

• Added ability to send Quotes
• Complete code refactoring
• Improved error handling
• Use date format as configured in WHMCS
• Fixed table state saving not working properly
• Now compatible with our BestPDF 2.0 module

• Added option to avoid sending invoices when balance is 0
• Properly handle client setting Never when Automatic mode is on
• Added ability to abort sending e-mails when sending via Pingen
• Added ability to send on overdue notices
• Fixed sidebar saying production mode was active even if staging was
• Updated Pingen API
• PHP 7.1 is now the minimum required version

• Made simplex/duplex print mode configurable
• Made left/right address position configurable
• Implemented send button on invoice edit page
• Made storage path configurable
• Implemented client profile setting for sending invoices on a per-customer basis
• Fixed United States not being detected by Pingen
• Updated Pingen API
• Updated bundled BestPDF module to version 1.1.1

• Fixed addon setting not always working properly
• Updated Pingen API
• Updated bundled BestPDF module to version 1.1.0

• Integration with our BestPDF module
• Integration with our PostFinance ISR module
• Implemented full localization to German, French and Italian
• Added option to specify Envelope Design ID
• Also send automatically when overdue charges are added to invoice
• Save sent date for invoices
• Use DataTables for table output
• Views are now in Smarty Templates
• Improved status display in invoices list
• Improved dialogs and feedback messages
• Improved sending speed handling
• Improved configuration
• Adaptations for new BlueRabbIT licensing server
• Some minor bug fixes
• Now requires at least WHMCS 7.0 and ionCube loader 10.1