ci: untie tsconfig a bit, but tighten tslint to cover

Author: hansl

tsconfig.json

@@ -9,8 +9,8 @@
     "noFallthroughCasesInSwitch": true,
     "noImplicitAny": true,
     "noImplicitThis": true,
-    "noUnusedParameters": true,
-    "noUnusedLocals": true,
+    "noUnusedParameters": false,  // The linter is used for these.
+    "noUnusedLocals": false,  // The linter is used for these.
     "outDir": "./dist",
     "rootDir": ".",
     "skipDefaultLibCheck": true,

tslint.json

@@ -46,6 +46,7 @@
     "no-internal-module": true,
     "no-trailing-whitespace": true,
     "no-unused-expression": true,
+    "no-unused-variable": true,
     "no-var-keyword": true,
     "one-line": [
       true,