add no-unused and react/recommended to eslint (#1523)

* add no-unused-vars and no-unused-imports

* added quotes: double, and remove ignore pattern

* move itif and describeif into utils

Signed-off-by: Sebastian Malton <sebastian@malton.name>

src/common/utils/escapeRegExp.ts

@@ -1,5 +1,5 @@
 // Helper to sanitize / escape special chars for passing to RegExp-constructor
 
 export function escapeRegExp(str: string) {
-  return str.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string
+  return str.replace(/[.*+?^${}()|[\]\\]/g, "\\$&"); // $& means the whole matched string
 }