removed unneeded commas
added tests for util.ObjectUtils
added test for ArrayUtils
unsignificant update on IteratorArray
added tests for util.MapUtils
removed unneeded comma in util.MapUtils
removed util.MultiMapUtils

- since it was not used
- it did not really work with MultiMapObjectArray, the class it was most
  probably written for
- the actual utility functionality (get, put, clear) already exists in
  the most collection classes
removed import of (deleted) util.MultiMapUtils file