Update consent form links
Change cesp.readyForSurveys into a local storage value, and change the
boolean checks on it to get the value from local storage and put the
dependent code in callbacks.
Merge branch 'master' into ready-status

Conflicts:
	extension/background.js
Don't set a timeout, just uninstall
Uninstall if participant is underage
Missing parens
Merge pull request #48 from christhompson/ready-status

Change readyStatus to be local storage based
Merge pull request #43 from adrifelt/updateconsent

Update consent form links
Merge pull request #49 from adrifelt/uninstallunder18

Uninstall if participant is underage