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

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

FixMe:
These tests have to be revised; they do not test the framework
interfaces but implementation details. They miss checking if
the invalidation reflects on control system variables.

- 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.

Adjust CMakeList to use add_dependency instead of FIND_PACKAGE for DeviceAccess library - now all path to headers are correctly added to the project when ControlSystemAdapter lib and DeviceAccess lib are installed in different directories.

- ConfigReader is in ApplicationCore.h, but was including ApplicationCore.h itself
- Added include guards to ApplicationCore.h, although it's not stricktly needed (all included headers have one). Might speed up complilation because it makes it easier for the parser.

wip: fix propagation of initial values from control system variables (persistence layer) and device registers (just the current value)

Device support for history