summary pages - alphabetical tab ordering

[lauranuttall]

Right now the summary pages are ordering tabs in alphabetical order, which isn't great when you want to order based on numbers (i.e. 10 comes before 2). For example see the category 3 tab on:

https://ldas-jobs.ligo-wa.caltech.edu/~laura.nuttall/detchar/O1/VET_hveto_vdf/test_few_hours/1135652417-1135699217/category_3/