fixes #583
added Badge.isExpired().
test/app-utils.js now dynamically determines its port, as per #591.
issuer.test.js no longer hard-codes its port, as per #591.
Adds the ability to turn on a development test user and circumvent persona
Fix: ballertime badge public_paths collided across users
Removes  link from header.
Merge pull request #592 from toolness/badge-isexpired

Added Badge.isExpired() to Backbone Badge model.
Merge pull request #594 from toolness/no-port-hardcoding

No port hardcoding
Remove port hardcoding from qunit tap util
Merge pull request #598 from davelester/feature/removehomelink

Remove `home` link from header
adding issuer and badge name to the escape pod.
Merge pull request #625 from stenington/more-no-port-hardcoding

Remove port hardcoding from qunit tap util
for demo public_path, join email and basename with colon
Change test user to trigger when value is in OPENBADGES_TEST_USER environment variable
Merge pull request #621 from cmcavoy/583-quotes-break-everything

fixes #583 hotfix to production
Merge pull request #627 from mozilla/production

Merge hotfix from Production
Merge branch 'staging' into development
Merge pull request #618 from stenington/ballertime-fix

Fix: ballertime badge public_paths collided across users
Merge pull request #617 from stenington/test-user

Adds the ability to turn on a development test user