Stop missing veg level from crashing the map js

Vendors missing veg levels will get coerced to 0. We are labeling
zero as "omni". We need to coerce to something because veg level is
an numeric data type and with the way templates fail silently, it is
occasionally empty.
Merge pull request #140 from steventlamb/bug/fix_map_js_veg_level

Stop missing veg level from crashing the map js
Revise home page title tag

Changed "Restaurants" to "Food Options" to be more inclusive.
Merge remote-tracking branch 'upstream/master'
Add alt text to imgs

Added alt text to img tags for improved SEO
Merge pull request #141 from ah2455/master

Changed "Restaurants" to "Food Options" to be more inclusive.
Link Cleanup

Converted several external links to rel="nofollow" in hopes of improving
SEO. Corrected some minor issues around target="_blank" attributes, where
HTML5 specifies that target="_blank" is the correct way to specify that
a link should open in a new tab.

Add template tag to stick a no follow attribute into an achor tag.
Add zipcode to homepage searchbar
Display reviews in reverse chronological order
Make h1 font smaller
Merge pull request #146 from ah2455/master

Decrease h1 font size
Merge pull request #145 from cwimbrow/topic/reverse_chronological_reviews

Display reviews in reverse chronological order