Basic unit relations management in BuilderDomain
Reactivation of Unit relations management in Builder
Update relations when deleting a Unit in Builder
Merge branch 'builder-unit-relations' of https://github.com/alibres/openfluid into alibres-builder-unit-relations
Fix of install configuration

* Removed installation header files of openfluid-io library
Fix of base.hpp header file

* Removed deprecated includes
Datastore descriptor access from Builder descriptor
Clear domain functionality
Fix market tests

* Added catalog and packages
* Updated file names format of simulations functions
* Upadated tests config header
Fix of observers paths management in RuntimeEnvironment

* Fixed reset method
* Updated tests