- 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()

do not read initial values in TestFacility if testable mode is disabled, as this is subject to race conditions then

  - Cleaned up comments
  - Place using-declaration of buffer_2D to class definition so the base
    class name can be omitted in the implementation

Need to wait until the internal fan out threads have been launched and acquired the testable mode lock before continuing with app starting and testing to avoid race conditions.

- remove "void ExceptionHandlingDecorator::setDataValidity(DataValidity newValidity)"
- add "void ExceptionHandlingDecorator::setOwner(EntityOwner* owner)" and remove owner setting in constructor

  - add list with shared ptr of transferElements for recovery write
  - add shared mutex

  - Cleanup:

    - Reorder code in Application::createDeviceVariable
    - Separated ExceptionHandlingDecorator constructors for writable and
      non-writable registers
    - cleaned up doPreWrite

- New flag parameter for ExceptionHandlingDecorator::genericTransfer.
  Method does not invalidate data if flag invalidateOnFailure is set to
  false.
- Write related methods in ExceptionHandlingDecorator set
  invalidateOnFailure flag to false

Changes resolve ticket #57.

  - First compiling version, tests pass, hope it works...
  - Needs some tweaking