Anagram test: case-insensitivity must go both ways
Anagram test: case-insensitivity must go both ways

Previously it was enough to normalize just the subject.

This also adds the missing case-insensitivity test to some languages.

exercism/xclojure,yurrriq/xclojure,wobh/xclojure,canweriotnow/xclojure,querenker/xclojure,exercism/xclojure,querenker/xclojure