Merge branch 'mfaria/my-changes' into 'master'

Mfaria/my changes

See merge request !1734 (merged)

(cherry picked from commit 23142185)

315d4dc6 Added .dec file for Bu->Ktautau, with tau decay though tauhadnu model d7129bda Updated decay descriptor and file name, removed pi0 798a8db5 updated event type 0e045ce6 updated documentation