Use sorting everywhere to make builds deterministic #2

There are still a few places where lists of symbols aren't sorted (like the sidebar: https://github.com/Wyamio/Samson/blob/3ba3e41daec978228c0a6de7f08f3fd03ab0ae3d/Shared/Sidebar/_Member.cshtml#L38-L41). Audit all uses of symbols and sort them where possible so that rebuilds don't change the order.