Add disclosure arrows to filter short questions on small screens. (#308)
Toggle the working area when pressing on a filter question.

Previously the behavior was to always show the working area, not
toggle it. Toggling it supports small-screen interaction and also
is OK on the full-size version. (#308)
Fix bug with species links on full-size pages. (#308)
Clarify some comments. (#308)
Add a switch for overriding the default list view on small screens. (#308)
Fix spacing below photos menu on full-screen view. (#308)
Merge branch 'level3-smartphone-v2'