Add headers for user readability

[deeTEEcee]

The horizontal view is useful if we're aware of the context (category, count) but it's missing the context of headers for application users.

Right now, I imagine the user has to get that working

Instead of just this,

Cats   [ 3]  ************
Dogs   [10]  ****************************************
Cows   [ 5]  ********************
Geese  [ 2]  ********

add a header:

Animals  Count
Cats     [ 3]   ************
Dogs     [10]   ****************************************
Cows     [ 5]   ********************
Geese    [ 2]   ********