bugfix

modified:   Makefile
modified:   libframework/zclient.cc
modified:   libframework/zclient.h
modified:   libframework/zsession_ctrl.h
new file:   server/center
modified:   server/center.cc
modified:   server/center.mk
modified:   server/database.h
new file:   server/fgw
modified:   server/fgw.cc
modified:   server/fgw.mk
modified:   server/fgw_client.h
modified:   server/fgw_client_handler.cc
modified:   server/fgw_client_handler.h
new file:   server/fgw_manager.cc
new file:   server/fgw_manager.h
modified:   server/fgw_server.cc
modified:   server/fgw_server_handler.cc
modified:   server/fgw_server_handler.h
modified:   server/todo.txt
modified:   server/webapi_msg.cc
new file:   server/zconfig.h
modified:   server/zserial.h
new file:   server/ztimer.h
modified:   server/zwebapi_handler.cc
modified:   server/zwebapi_handler.h
modified:   server/zwebapi_session.h
Merge branch 'branch-1'