libtorc-core: Hook up error notification in TorcNework
libtor-core: Move exit handling code into CloseConnections
libtorc-core: Complete non-streamed network downloads

- and add some documentation
libtorc-core: Set and respect read size in TorcNetworkRequest
libtorc-core: Track download progress in TorcNetwork/Request
libtorc-baseui: Use TorcBuffer to load images/files

- which allows remote themes...
libtorc-core: Add abort hanlding to UIImage