Fix memcache issues related to notification settings, add supporting classes and mappings for notification, recipients and objects
Fix memcache issues related to notification settings, add supporting classes and mappings for notification, recipients and objects

VinnieJohns/ggrc-core,andrei-karalionak/ggrc-core,NejcZupec/ggrc-core,andrei-karalionak/ggrc-core,VinnieJohns/ggrc-core,hasanalom/ggrc-core,AleksNeStu/ggrc-core,selahssea/ggrc-core,plamut/ggrc-core,prasannav7/ggrc-core,j0gurt/ggrc-core,hyperNURb/ggrc-core,selahssea/ggrc-core,vladan-m/ggrc-core,j0gurt/ggrc-core,uskudnik/ggrc-core,prasannav7/ggrc-core,kr41/ggrc-core,NejcZupec/ggrc-core,kr41/ggrc-core,jmakov/ggrc-core,josthkko/ggrc-core,uskudnik/ggrc-core,edofic/ggrc-core,josthkko/ggrc-core,hasanalom/ggrc-core,uskudnik/ggrc-core,kr41/ggrc-core,AleksNeStu/ggrc-core,plamut/ggrc-core,kr41/ggrc-core,hasanalom/ggrc-core,vladan-m/ggrc-core,josthkko/ggrc-core,hasanalom/ggrc-core,AleksNeStu/ggrc-core,NejcZupec/ggrc-core,VinnieJohns/ggrc-core,plamut/ggrc-core,hasanalom/ggrc-core,edofic/ggrc-core,prasannav7/ggrc-core,vladan-m/ggrc-core,jmakov/ggrc-core,jmakov/ggrc-core,vladan-m/ggrc-core,edofic/ggrc-core,hyperNURb/ggrc-core,andrei-karalionak/ggrc-core,hyperNURb/ggrc-core,josthkko/ggrc-core,hyperNURb/ggrc-core,uskudnik/ggrc-core,selahssea/ggrc-core,selahssea/ggrc-core,andrei-karalionak/ggrc-core,vladan-m/ggrc-core,j0gurt/ggrc-core,edofic/ggrc-core,jmakov/ggrc-core,plamut/ggrc-core,hyperNURb/ggrc-core,VinnieJohns/ggrc-core,prasannav7/ggrc-core,AleksNeStu/ggrc-core,uskudnik/ggrc-core,jmakov/ggrc-core,j0gurt/ggrc-core,NejcZupec/ggrc-core