More tidying up, added category to invoices, invoice delete now deletes invoice, pyaments, history and items associated with invoice. Exclude Cancelled invoice under dashboard income recieveables

vendor/otphp-10.0/phpstan.neon

@@ -0,0 +1,13 @@
+parameters:
+    level: 7
+    paths:
+        - src
+        - tests
+    ignoreErrors:
+        - '#Variable property access on \$this\(OTPHP\\OTP\)\.#'
+includes:
+    - vendor/phpstan/phpstan-strict-rules/rules.neon
+    - vendor/phpstan/phpstan-phpunit/extension.neon
+    - vendor/phpstan/phpstan-deprecation-rules/rules.neon
+    - vendor/thecodingmachine/phpstan-safe-rule/phpstan-safe-rule.neon
+    - vendor/phpstan/phpstan-beberlei-assert/extension.neon