Barcodes in BP reports!!

Yesterday I made a small fix, which only fixed getting "user's sample name", this should fix getting the barcode sequence as well in BP report.
very true!! The way it is now, it shouldn't crash (hopefully/logically). But again it wont hurt to be in safer side. I was just "lazy" :P 

So now I will change it to `[sample_name_map[s].get('barcode_seq',None) for s in samples_df.Sample]`and poke you again, is that ok @guillermo-carrasco ?