update I2P to 0.9.8.1

I2P packages for wheezy:

We recieved the following info on #tails

I contacted devs and debian package maintainer on irc i2p this was the response:

the precise should work (tested in a vm), but the packages at https://dl.dropboxusercontent.com/u/18621288/debian/repo.html are explicitly built in wheezy (and sid) chroots *precise repo

regarding i2p key trustpath to https://dl.dropboxusercontent.com/u/18621288/debian/repo.html response follows:

The repository’s key (0x8CF6E896B3C01B09) is signed with my key (nick: kytv) (0xABE0C319DF0A0A1A). The key 0xABE0C319DF0A0A1A is granted upload rights to our Launchpad account and signed the license agreement at http://www.i2p2.de/license-agreements.html

Related issues

Blocked by #5889 (closed)

Original created by @tails on 6080 (Redmine)

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information