Added Http plugin stub.
Added class stubs: NetworkAccess, IDownloadItem, INetworkHandler and INetworkListener.
[Http] Added classes HttpCmd, HttpHandler, HttpTask and HttpTaskCreator.
Added classes GenericDownloadItem and HttpDownloadItem.
Basic http download.
Added support for in memory downloads.
Fixes for Qt4.
Added Http plugin for Windows NSIS installation in core section.
Fix for Qt 4.6.
Fix for Qt 4.6.
Added Preview plugin stub.
Added interface ITokenFilter.
Text filters now get a message id.
[Preview] Added class PreviewFilter.
[Preview] Added classes PreviewChatView and PreviewWindowObject.
[Preview] Added classes PreviewDB and PreviewStorage.
[Preview] Added class PreviewItem.
Fixed crash.
[Preview] JS code now can obtain images ids.
[Preview] Added images.