Circumvent Rcdk bug about charged/uncharged masses with formula generation.
Remove multiplicity filtering from XCMS vignette
headerCache fix test
headerCache fix 2
headerCache fix 3 and "partially matched" fix
Half a fix for dbname access
Update RMassBank.Rnw

Removed rogue text from vignette, it's still in the 1.9.2.1 vignette
Merge with meowcat