ScalarPollInput and ArrayPollInput: Removed doReadTransfer, which does not make sense in the interface

	-waitting for recovery is now outsourced in function
	DeviceModule::waitForRecovery()

	-everywhere where the function is called, the new function is now called.

Replaces calls to doXxxTransferYyy of the TransferElement by the
corresponding xxxTransferYyy call

Fixes #144

fix not using a ConsumingFanOut when connecting the two poll-types each with a push-type variable (e.g. control system)

this happens frequently when following the modern connectTo() logic and connecting everything with the control system.

- The direction cannot be determined from the accessor which is being decorated
- Fixed wrong usage of feeding/consuming in Applicaton::createDeviceVariable. Was used consistently wrong, so there was no behaviour bug. But the code was confusing because the direction was wrong.

Tests still failing.

- All accessors come up in exception state.
- Read-accessors increase counter in init phase

Assertion is gone, but tests still failing

  - Rewrite on exception counter change
  - getDataValidity respects exception and dataFault counters

  - EntityOwner has individual counters for both events
  - Adapted all instances of increment/decrementDataFaultCounter
  - Not changed getDataValidity() implementation yet
  - Tests failing

The default value was properly propagated but not visible to the test until a value was sent through the return channel.

This can be overridden by a newly introduced boolean argument. Including the return channel was causing problems e.g. when propagating the DataValidity flag.

- Exception handling decorator does not allow to leave testable mode before
  devices are up
- Test facility makes sure that testable mode counter is zero at the end of startApplication()

wip #47: register accessor for write after open in DeviceModule if write cannot be performed in initialisation phase

change declaration of 'decrementDataFaultCounter' in 'EntityOwner' to take a bool parameter and adjust rest of the code to it
implement 'decrementDataFaultCounter' in 'ApplicationModule' according to ticket #95 -> rewrite all outputs when 'faultCounter' goes from 1 to 0

remove commented part of ExceptionHandlingDecorator - 'void doPreRead() override' and its implementation

removed doPreRead() / doPreWrite() , doPostRead() / doPostWrite() from ExceptionHandlingDecorator - tests are now failing

	Ticket #79
	- documentation for addRecoveryAccessor() and getRecoverySharedMutex()