Remove outproxy hook in context, use ClientAppManager:

  - Add clientAppManager() to I2PAppContext so it can be used there
  - Add routerAppManager() to RouterContext for convenience inside router

Start of SSL support in I2PTunnelHTTPClient
  - Add initialSocketData support back to I2PTunnelOutproxyRunner
  - Works for orchid (and in-net?)
  - TODO Doesn't work for in-net proxy
  - Need separate config for SSL proxy