Add complete Gan Chinese translation

.tx/config

apps/desktopgui/locale/messages_gan.po

...k/java/src/org/klomp/snark/standalone/ConfigUIHelper.java

apps/i2psnark/locale/messages_gan.po

apps/i2ptunnel/locale-proxy/messages_gan.po

apps/i2ptunnel/locale/messages_gan.po

apps/ministreaming/locale/messages_gan.po

...e/java/src/net/i2p/router/web/helpers/ConfigUIHelper.java

apps/routerconsole/jsp/css.jsi

apps/routerconsole/locale-countries/messages_gan.po

apps/routerconsole/locale-news/messages_gan.po

apps/routerconsole/locale/messages_gan.po

apps/routerconsole/resources/docs/readme_gan.html

apps/susidns/locale/messages_gan.po

apps/susimail/locale/messages_gan.po

core/java/src/gnu/getopt/MessagesBundle_gan.properties

core/locale/messages_gan.po

debian/i2p-router.manpages

debian/i2p.manpages

debian/po/gan.po