add verbose translation for a(1)
add verbose translation for a(2)
update some options in the doxyfile
Stop printing warnings for acceptable cases.

If the branching fraction is smaller than the limit or the deviation is
smaller than 1 sigma, then no warning should be printed for now.
Add flag 3-body to remove_flags

This flag has been added to some decays which should be compared to the
decays in the source file.
However this flag is systematically different from the other flags in
this category and is more similar to the 'total' and 'nonresonant'
flags.