changes images/ to img/ to please bootstrap.css
restyle the list items with absolute positioning, smaller trail-box
continuing to tighten style of list, typography, etc.
Populated demonstration detail panel.
beginning another pass of styling the navbar btn group
Merge branch 'master' of https://github.com/danavery/trailsy

Conflicts:
	index.html
Merge branch 'master' into navbar

Conflicts:
	index.html
typography btw list items and detail panel
add trail categories to detail panel, new close btn, list hover styles
reverting to more basic styles for nav btn pseudoclasses, for consistency
replace search box with the Redo Search Link for time being