fixed indentation of docstring in `dataset.Dataset.split_train_other(...)`

added qutations to all dataset citations since ":" were interfering with proper parsing in select cases

conversion of mRECIST values needed for some PDX datasets. The formatting function of coderdata returns a DF with the mRECIST column having dtype 'str'. Previously 'floats' where assigned to the values causing a TypeError.

Note the datasets still have a typo of mRESCIST.

for the improve framework to work properly study identifiers in the split file names and the respones have to be of the same case. This fix is implemented such that this is guaranteed