Update charts
Update charts

See https://github.com/LibCrowds/libcrowds-pybossa-theme/issues/36
alexandermendes/libcrowds-pybossa-theme,alexandermendes/BL-pybossa-theme,LibCrowds/libcrowds-pybossa-theme,LibCrowds/libcrowds-pybossa-theme,alexandermendes/libcrowds-pybossa-theme,jacksongs/libcrowds-pybossa-theme,jacksongs/libcrowds-pybossa-theme,alexandermendes/BL-pybossa-theme