pie charts: regroup in a single slice languages with sloc < 5%
pie charts: regroup in a single slice languages with sloc < 5%

Closes: #761228

Signed-off-by: Stefano Zacchiroli <d7cdf09fc0f0426e98c9978ee42da5d61fa54986@upsilon.cc>

vivekanand1101/debsources,devoxel/debsources,oorestisime/debsources,oorestisime/debsources,sophiejjj/debsources,clemux/debsources,devoxel/debsources,clemux/debsources,Debian/debsources,clemux/debsources,devoxel/debsources,sophiejjj/debsources,sophiejjj/debsources,matthieucan/debsources,zacchiro/debsources,clemux/debsources,matthieucan/debsources,sophiejjj/debsources,Debian/debsources,oorestisime/debsources,Debian/debsources,matthieucan/debsources,vivekanand1101/debsources,vivekanand1101/debsources,vivekanand1101/debsources,oorestisime/debsources,Debian/debsources,zacchiro/debsources,oorestisime/debsources,sophiejjj/debsources,Debian/debsources,matthieucan/debsources,devoxel/debsources,zacchiro/debsources,matthieucan/debsources,zacchiro/debsources,vivekanand1101/debsources,clemux/debsources,devoxel/debsources,zacchiro/debsources