Make it possible to manually start IBus.

By always exporting the environment variables it is
possible for the user to manually start IBus in any
locale using "System->Preferences->IBus Preferences".
IBus need to actually be started for the french
keyboard shortcuts bug to appear, so this is safe to do.

Also update the description for current behaviour.
Update design document for current IBus behaviour.
update I2P's site addresses

I2P's domains (internal and external) have recently changed with the
site refresh. Its new address is https://geti2p.net. http://www.i2p2.de
301 redirects to the new location.
simplified ports listing
update internal I2P homepage address

Here the address in the bookmarks and release process test document is
updated.
Merge remote-tracking branch 'killyourtv/bugfix/new-i2p-site' into devel
Merge remote-tracking branch 'winterfairy/bugfix/allow-ibus-start' into devel