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This work was supported by Fundação para a Ciência e Tecnologia, Portugal, under the projects UID/FIS/04564/2016 and POCI-01-0145-FEDER- 029912 with financial support from POCI, in its FEDER component, and by the FCT/MCTES budget through national funds (OE), and by the Polish National Science Centre (NCN) under the grant No. 2017/26/D/ST9/00591. Partial support comes also from the PHAROS COST Action CA16214. HP is supported by FCT (Portugal) under Project No. SFRH/BPD/95566/2013. MF was partially supported by one STSM grant from the COST Action MP1304 and another one from PHAROS COST Action CA16214.