Doxygen generation (with small fixes for it)

TIMBER/Analyzer.py

TIMBER/Framework/src/PDFweight_uncert.cc

TIMBER/Framework/src/TopPt_weight.cc

docs/_collection_8h_source.html

docs/_gen_matching_8h_source.html

docs/_lumi_filter_8h_source.html

docs/_pythonic_8h_source.html

docs/annotated.html

docs/class_gen_particle_objs-members.html

docs/class_gen_particle_objs.html

docs/class_gen_particle_tree-members.html

docs/class_gen_particle_tree.html

docs/class_hist_loader-members.html

docs/class_hist_loader.html

docs/class_lumi_filter-members.html

docs/class_lumi_filter.html

docs/class_p_d_fweight__uncert-members.html

docs/class_p_d_fweight__uncert.html

docs/class_particle-members.html

docs/class_particle.html