preserve existing categories when updating an app from an embed source
preserve existing categories when updating an app from an embed source

mrjive/hubzilla,redmatrix/hubzilla,mrjive/hubzilla,sasiflo/hubzilla,redmatrix/hubzilla,sasiflo/hubzilla,mrjive/hubzilla,redmatrix/hubzilla,sasiflo/hubzilla,redmatrix/hubzilla,mrjive/hubzilla,mrjive/hubzilla,sasiflo/hubzilla,redmatrix/hubzilla,sasiflo/hubzilla,redmatrix/hubzilla,sasiflo/hubzilla,mrjive/hubzilla