Add link to i2pd docs

fix broken close-<em>, fix verbiage of link to I2PIPB source, change outproxy notice, edits suggested by crookedDriving, thx

force 1 and 2 digit date units to compare as if they were always 2-digit date units when sorting blog posts. Serve 2-digit date-units before 1-digit date units when rendering blog posts.

by rerunning update-existing-po.sh again

update contact page, replace meeh with zlatinb on packagers OSX, meeh with Stormycloud for outproxy, meeh with me for everything else