Use GTK+ stock icons for page navigation.

Use stock icons for directory change too.

git-svn-id: svn+ssh://svn.code.sf.net/p/mcomix/code@942 ef8490bc-f317-4725-81ed-e95a9aca1bcf
Remove unused icons.

git-svn-id: svn+ssh://svn.code.sf.net/p/mcomix/code@943 ef8490bc-f317-4725-81ed-e95a9aca1bcf
Mention icon changes to next/previous buttons.

git-svn-id: svn+ssh://svn.code.sf.net/p/mcomix/code@944 ef8490bc-f317-4725-81ed-e95a9aca1bcf
Distribute was merged with Setuptools.

git-svn-id: svn+ssh://svn.code.sf.net/p/mcomix/code@945 ef8490bc-f317-4725-81ed-e95a9aca1bcf
Updated German translation.

git-svn-id: svn+ssh://svn.code.sf.net/p/mcomix/code@946 ef8490bc-f317-4725-81ed-e95a9aca1bcf
Handle exception when user uses key that is already bound same action.

git-svn-id: svn+ssh://svn.code.sf.net/p/mcomix/code@947 ef8490bc-f317-4725-81ed-e95a9aca1bcf