renamed utils and continued myList

This commit includes the renaming of all Utilities classes and the main
class to full names rather than abbreviations and the implementation of
static imports to utilize static utility methods without explicit class
calls.
In addition, I added and/or implemented free()/delete() methods, the
"has[...]()" methods, and the overridden methods clone(), equals(), and
toString() (except compareTo()). Finally, myListNode and myListIterator
were decidedly unnecessary and were removed.