download more epg items when reaching the end of the table
renamed epgList to epgStoreItems
Added isEqual to some objects so they can be compared with indexOfObject
Added items to store for dvrstore and channelstore by comparing if the item is already there (this removes the duplicate thing -> although the request is done twice! need to figure that out)
epg is now working without duplicates and loading more epg data on the end of the table
removed "id" from channel (it was correct, chid is the channel id)
added order by name or order by number (still missing the option in settings)
this if is no longer necessary
fixed test because of new ordering