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
strong password with zxcvbn
Merge pull request #210 from khandhas-infra/strongpws

Beoordeel wachtwoorden met zxcvbn
postfix sender login map generation
Merge pull request #211 from khandhas-infra/postfix-slm

postfix sender login map generation
bestuur5: veranderingen naar e-mail van Rik dd 11 sept. 2014
header/bestuul: smaller fadeout