Fixed preview in history dialog for previously deleted  resources.
Fixed preview in history dialog for previously deleted  resources.
sbonoc/opencms-core,MenZil/opencms-core,MenZil/opencms-core,mediaworx/opencms-core,mediaworx/opencms-core,ggiudetti/opencms-core,ggiudetti/opencms-core,victos/opencms-core,gallardo/opencms-core,alkacon/opencms-core,alkacon/opencms-core,mediaworx/opencms-core,sbonoc/opencms-core,ggiudetti/opencms-core,mediaworx/opencms-core,MenZil/opencms-core,victos/opencms-core,gallardo/opencms-core,gallardo/opencms-core,ggiudetti/opencms-core,sbonoc/opencms-core,alkacon/opencms-core,victos/opencms-core,sbonoc/opencms-core,victos/opencms-core,alkacon/opencms-core,gallardo/opencms-core,MenZil/opencms-core