TT-141 Added current web page info sync

TT-141 Added current web page info sync

[Issue#] https://bugs.tizen.org/jira/browse/TT-141
[Problem] Current web page info wasn't always updated and
          favicon wasn't loaded
[Cause] Lack of proper signals
[Solution] Added signals, removed genlist and used single layout instead,
           resized space for site info, removed pointless image reload
           from  WebView::getFavicon
[Verify] Open a new page -> type web url -> MoreMenu
         Check if the info is properly loaded

Change-Id: Ibe3f7cd97279470761eaa9f58c9e40b06c655eeb