tooltips for host add

https://fedorahosted.org/freeipa/ticket/1363
https://fedorahosted.org/freeipa/ticket/1361

install/ui/host.js

@@ -103,7 +103,8 @@ IPA.entity_factories.host = function () {
                     factory:IPA.text_widget,
                     name:"ip_address",
                     undo:false,
-                    label:  IPA.get_method_option('host_add','ip_address')['label']
+                    label:  IPA.get_method_option('host_add','ip_address')['label'],
+                    tooltip: IPA.get_method_option('host_add','ip_address')['doc']
                 }
             ]
         }).

install/ui/widget.js

@@ -1609,7 +1609,8 @@ IPA.entity_select_widget = function(spec) {
 
         if (editable){
             that.edit_box = $('<input />',{
-                type: 'text'
+                type: 'text',
+                title: that.tooltip
             });
 
             $('<div style:"display=block;" />').