Query Param Validation Meta-bug

Eg: *
Else, N/A

Related to bug 1457625, we need to work on being less trusting of query params, not just locg. I don't know that there are any security issues as of yet but triggering ISE's just by playing with query params is not good. At least a 500 error implies that we have checked the params and found them lacking, vs. plowing ahead until we hit a wall. (Sane defaulting allows users to be sloppy and still see results, that's another thing to consider.)