Merge pull request #112 from tobiasd/master

add Michael as author of SN/T connectors
Switch from "on"/"off" config style to "1"/<unset>
Merge pull request #113 from mexon/mailstream

Switch from "on"/"off" config style to "1"/<unset>
Added retriever plugin
Merge pull request #114 from mexon/retriever

Added retriever plugin
use simple style for sharing on SN
use simple style for sharing on twitter
Merge pull request #115 from tobiasd/snt_newstyle_share

use simple share for SN and T
Twitter needs a lower character limit