load Google Analytics asynchronously

Also always use the SSL version of GA as the website itself always uses SSL and
it shouldn't harm to always use SSL.
canonical_email: ensure its a str
ldap synchronization
Merge pull request #207 from aykevl93/google-analytics-async

load Google Analytics asynchronously
Merge pull request #209 from khandhas-infra/ldap-sync

LDAP synchronisatie