Fix level issue in mbWorkflow

[tsufz]

Error in if (level %in% c("0", "1", "1a", "1b", "1c", "2", "2a", "2b", :
argument is of length zero
Called from: findLevel(id, TRUE)

I guess, this generates from a faulty gathering of online information. As a level is not given in den compounds.csv, it stops here?

• Check the level assignment and dependency in compounds.csv
• Fix necessary code issues
• Update the example files in RMassBankData

[tsufz]

Ah, really missing level entry in my files...

IMHO; needs automated message to users (grumbl).