[gui/api] sendConfReplyMessage: support a max tlv-length of 65536 bytes
[gui/api] sendConfReplyMessage: support a max tlv-length of 65536 bytes

Signed-off-by: Robert Wuttke <12e9293ec6b30c7fa8a0926af42807e929c1684f@benocs.com>

Benocs/core,Benocs/core,Benocs/core,Benocs/core,Benocs/core