BAP-126: set notnull for entities fields, update documentation, fix mysql engine
BAP-126: set notnull for entities fields, update documentation, fix mysql engine

jankkhvej/platform-application,vetal-e/academic_platform,vetal-e/academic_platform,cbradescu/orotlt,devXpro/OROBug,jankkhvej/platform-application,orocrm/platform-application,kos21/RADOROPlatform,cbradescu/deranjamente,cbradescu/deranjamente,olegmack/oro-academic,kos21/RADOROPlatform,cbradescu/deranjamente,EugenZi/oro-platform-app,cbradescu/orotlt,cbradescu/orotlt,vetal-e/academic_platform,devXpro/OROBug,DMKEBUSINESSGMBH/adoro,vshabala/academic,orocrm/platform-application,vshabala/academic