Concatenates the specified parts of URL-s with correctly arranging of slashes and returns a new string
// 'foo/baz/bar/bla'concatURLs('foo/baz', '/bar', 'bla');// 'http://foo.bar/bla'concatURLs('http://foo.bar', 'bla');
concatURLs
Concatenates the specified parts of URL-s with correctly arranging of slashes and returns a new string