skill plan controller stub
very basic table for plans metadata
use template for plans index (and what a template it is)
initialize skill plans section breadcrumbs with base entry
collect current user's skill plans into the stash
simple grid listing of personal skill plans, with add-plan always at the end (on its own line if the most recent row was already full)
simple styling for skill plan list-view boxes
use skill plan box class inside each grid column
force some spacing between rows of skill plans
tweaks to plan-box styling; hover style with palette-flip, forced height with hidden overflow, removal of pointless height-100%