Make Module::connectTo() no longer a template, since a virtual function can anyway not be overridden with a different return type... (c.f. the comment in the deleted code)

- removed the no-longer-necessary optional argument of findTag() - use flatten() instead

obey the eliminate hierarchy flag when using the () and [] operators of modules (and thus also when using connectTo())

refactor ArrayAccessor and ScalarAccessor: split off common code and put into common base class InversionOfControlAccessor

Fixed some more problems with the move sematics of EntityOwner/Module. Re-registration at the owner was missing and some things were done in the wrong place. Also the move assignment is now back again.

put the move constructor and move assignment-operator into the EntitiOwner base-class and inherit them

Fixed tests which were broken after updating the demoApp due to changed map files. Now the tests have their independent map files.

introduced a ModuleGroup (grouping ApplicationModules and other ModuleGroups) and enforced a proper hierarchy of modules to exclude that an ApplicationModule can own (directly or indirectly) another ApplicationModule

update for interface change in DeviceAccess: TransferElement::write() has now the version number as an argument

allow determining a fully qualified name for application variables (i.e. including qualified name of owning module)

made Module::connectTo() compile-time polymorphic, to allow special modules with operator() returning a different type.

Fixed several bugs affecting poll-type variables being read by a poll-type application variable and distributed to push-type variables via a ConsumingFanOut.

Changed Module::readAll() to read all push-type variables first, to make sure that poll-type variables are up-to-date upon return

This reverts commit 7287c4b4.

revert last commit, cascading ApplicationModules should be avoided instead (and should be prevented in future)