removed some cout lines that were used for debugging
Exporting as csv now also takes into account permutation
fixed unit tests for external format
added permutation stuff for stdlib relation
wip
Changed signal queing std::string to QString. Removed unused signals fired when permutation changes since it is no longer needed due to immutable relations
Fixed external relation format of example relations to contain permutation of attributes as well
Added Save functionality in RelationWindow with Ctrl+S shortcut and changed Save As functionality to Ctrl+A
Implement substr(a, 1, 2) and remove a(1..2)
Merge branch 'master' of https://github.com/jasn/RASMUS