spamassassin: 13 new tests. Moved config loading

into register() with callback

remaining changes are to improve testability
Merge pull request #667 from msimerson/spamassassin

spamassassin: 13 new tests. Moved config loading
config/*: mass adjustments
config/plugins: populate it
geoip: enable distance & too_far
headers: disable reject
config-plugins: back out karma.ini
config/plugins: replace mail_from.access and rcpt_to.access with access
config: remove spamexperts from mf.bl_re
change version, so it's advertised
disabled by default for proto_mismatch
package.json: bump version number into the future