Parsing of IPv4 and IPv6 addresses

Added support of parsing and validation of IPv4 and IPv6 addresses.
Class IP.address can also create reverse address from any valid IPv4 or IPv6 address.

This functionality is needed for tickets:
https://fedorahosted.org/freeipa/ticket/1466
https://fedorahosted.org/freeipa/ticket/1975

install/ui/test/all_tests.html

@@ -8,6 +8,7 @@
     <script type="text/javascript" src="../jquery.ba-bbq.js"></script>
     <script type="text/javascript" src="../jquery-ui.js"></script>
     <script type="text/javascript" src="../jquery.ordered-map.js"></script>
+    <script type="text/javascript" src="../net.js"></script>
     <script type="text/javascript" src="../ipa.js"></script>
     <script type="text/javascript" src="../widget.js"></script>
     <script type="text/javascript" src="../field.js"></script>
@@ -30,6 +31,7 @@
     <script type="text/javascript" src="certificate_tests.js"></script>
     <script type="text/javascript" src="aci_tests.js"></script>
     <script type="text/javascript" src="widget_tests.js"></script>
+    <script type="text/javascript" src="ip_tests.js"></script>
 </head>
 <body>
     <h1 id="qunit-header">Complete Test Suite</h1>
@@ -39,4 +41,4 @@
     <ol id="qunit-tests"></ol>
     <div id="qunit-fixture"></div>
 </body>
-</html>
+</html>