Bugs from AE Merge

[ksalyer]

2 bugs were found, but more may become apparent when fixing these two:

1. When running PCA training with following command:
   python scripts/train.py --input_file "tutorial/SingleMuon.parquet" --output_dir "tutorial/tutorial_addMLAlgos" --algorithm "pca" --tag "default_pca" --histograms "L1T//Run summary/L1TStage2EMTF/emtfTrackPhi,L1T//Run summary/L1TStage2EMTF/emtfTrackEta" --debug

returns the following error: pcaError.pdf

which leads to these lines in the pca algorithm:

AutoDQM_ML/autodqm_ml/algorithms/pca.py

Lines 102 to 107 in dea6a7d

	if 'CSC' in histogram:
	label_field = 'CSC_label'
	elif 'emtf' in histogram:
	label_field = 'EMTF_label'
	else:
	label_field = None

2. When running autoencoder training with following command:
   python scripts/train.py --input_file "tutorial/tutorial_addMLAlgos/SingleMuon.parquet" --output_dir "tutorial_addMLAlgos" --algorithm "autoencoder" --tag "default_ae" --histograms "L1T//Run summary/L1TStage2EMTF/emtfTrackPhi,L1T//Run summary/L1TStage2EMTF/emtfTrackEta" --debug

returns the following error: aeError.pdf

which leads to this line in the ae algorithm:

AutoDQM_ML/autodqm_ml/algorithms/autoencoder.py

Line 391 in dea6a7d

strides = self.self.strides_1d,

[chosila]

I've reverted the PR that caused this issue #33