Makefile: clean-public also ignores version dir
get all zone records when listing AWS servers

Display hostnames when running: thor cloud:list even
when the zone record list is large.

Just requesting all results in a paginated type of
response from Route53. Using the all! method in Fog
actually gets all the records. 

This is inefficient. It should instead be possible
to get a DNS record from Route53 with fog by specifying
a record type of "A" and the right IP address.
AWS: generate target correctly in server_prologue

Fixes thor tasks for creating and re-creating servers.

Example:

  thor cloud:recreate <hostname>
cap <target> deploy:setup: provide more instructions
Gemfile updates: fog, guard, guard-sass, guard-coffeescript