Added dependency between tutorials
Disable one tutorial and fix staff.py file location.
Use the command root instead of rot.exe to run the tutorials
Fix a double delete and control usage of proof
Keep comment spans during conversion!
Keep comment spans of code inside comments.
Return the created pad for THtml; create hsimple.root if needed.
Improve documentation of TTreeReader.
GetMissingDictionaries: change behaviour for special case:pair.

Pair is a special case and it is not checked for missing dictionary, but
it will recurse on its elements if the recurse flag is on.
GetMissingDictionaries:change behaviour of special case:pair.

"Pair" is a transparent container, thus we will look at its elements' types.