allow twitter users to add public/private.  added a migration for important containers but haven't implemented yet
fixed minor style problems
style errors
fixed typo
start of  cloning of containers
merged schemas
container add to current_user on clone
fixed whitespace error
updates from johns branch and minor styling
validate URL has a public suffix
moved url public_suffix validation to Model, added URL uniqueness validation
small model refactor
fixed 'Home' link tests, added validation test
modified .gitignore
updating git ignore
updating
changed search form slightly
fix for edit user form
test for cloning a container
minor style tweaks