sending control signals moved from TaskProvider to SignalHandler

conf/dataManager.conf

src/sender/DataDispatcher.py

src/sender/DataManager.py

src/sender/SignalHandler.py

src/sender/TaskProvider.py

src/sender/dataFetchers/getFromFile.py

src/sender/dataFetchers/getFromHttp.py

src/sender/dataFetchers/getFromZmq.py