Introduced capability ie.setProxyByServer to select how IE browser proxy will be set up -
by old java code using Windows registry or inside IEDriverServer using WinINet methods.

This capability is marked as deprecated due in next versions it will be removed and
IE proxy settings will be set up only by IEDriverServer.

Current default value of ie.setProxyByServer is false so Windows registry will be used for
IE proxy setup.