clean redundant include in main directory

messagedock.h messagedock.cpp

element.cpp
main.h
mnemo.h mnemo.cpp
module.cpp module.h

mouseaction.h mouseaction.cpp

node.h
octave_window.h

qucs.cpp qucs.h

syntax.h
viewpainter.h
wire.h
wirelabel.cpp wirelabel.h
Merge pull request #83 from yodalee/feature-clean-maindirectory-include

clean redundant include in main directory