Removed YRS from the age label.

Some of the greyhounds are under a year of age, so this would get
confusing if all greyhounds under 1 year showed 0 for their age.

This allows months and weeks to be displayed.
Replaced Greyhounds link with a drop down.

The drop down adds the link to the happy tails (adopted) page.
Added a available field to greyhounds data

This boolean field will be used to decide which greyhounds to
populate the page with.  available hounds will be used for the
avilable greyhounds page, while unavailable hounds will be used
for the "Happy Tails" page.
Added Greyhounds with happy tails

These are all the greyhounds that have been adopted.
Don't display empty information on greyhound profiles.

We don't want a label with no text, like if a greyhound's age is not set.
Added adopted greyhound profile pages.
Added back links to adopted greyhounds

Some links won't go anywhere, and some are broken, but that is what
feature branches are for :-)
Fixing minor issues with the happy tails pages
Wrapped text under dog picture.

Longer descriptions looked weird when they didn't wrap under the
greyhound's picture.
Merge branch 'add-happy-tails-page' of github.com:zachwhaley/gpa-centex into add-happy-tails-page

Conflicts:
	_layouts/greyhound.html
	greyhounds/abnar.md
	greyhounds/anastasia.md
	greyhounds/angelo.md
	greyhounds/audi.md
	greyhounds/backwoodsalaska.md
	greyhounds/backwoodstimothy.md
	greyhounds/backwoodstyson.md
	greyhounds/batman.md
	greyhounds/bingo.md
	greyhounds/breezy.md
	greyhounds/cathy.md
	greyhounds/chargingwarrior.md
	greyhounds/chrissie.md
	greyhounds/chrissy.md
	greyhounds/cora.md
	greyhounds/daniel.md
	greyhounds/dolly.md
	greyhounds/dynomite.md
	greyhounds/elle.md
	greyhounds/fiona.md
	greyhounds/gidget.md
	greyhounds/giselle.md
	greyhounds/harmony.md
	greyhounds/jack.md
	greyhounds/jacy.md
	greyhounds/jet.md
	greyhounds/lily.md
	greyhounds/limoncello.md
	greyhounds/luckypaco.md
	greyhounds/luna.md
	greyhounds/opal.md
	greyhounds/pepper.md
	greyhounds/santana.md
	greyhounds/sheila.md
	greyhounds/vegas.md
	img/lily2.jpg