added extra constant
adapted load method to support tracks
added signal and Q_OBJECT macro to support signals for streaming
added new type
wrong return type in attributetable
as pixeliterator is no longer derived from the std::iterator class ( was a bit pointless and had side effects) for some reason the for_each needs now std:for_each. It is correct but I wonder why it previously didnt need it.
pixel iterator no longer derived from std::iterator and some minor changes to ensure that --end will end up in the last valid l;ocation
Merge remote-tracking branch '52n/master'
remove postgres schema from container exception (catalog does not work for now, but that must be reviewed in how a catalog root is determined)