v1.4.1

• Added reference search to admin sales & invoices pages.
• Tweaked sales table toolbar css for better responsive design.
• Replaced template wysiwyg with code editor and added function to restore a single template.
• Updated logging function to include user info and correct IP address when behind proxy.
• Added VAT tax calculation.
• Added cost & profit reporting to dashboard and graph pages.
• Added new overview report with sales, voids, refund, revenue, cost & profit.
• Added load details function to transaction list dialog.