Fuel UI Japanese improvement

[Damia Pastor]

The current Japanese language part is outdated and should be corrected by request of multiple prospects in Japan.

[Damia Pastor (magradallegir)]

We can provide the corrected translation.json translated by myself and reviewed by our Japanese office team.

[Toshihiro Kan (kansuke4649)]

Fix proposed to branch: master
Review: https://review.openstack.org/191674/

[Julia Aranovich (jkirnosova)]

Verified on ISO#286

{"build_id": "286", "build_number": "286", "release_versions": {"2015.1.0-7.0": {"VERSION": {"build_id": "286", "build_number": "286", "api": "1.0", "fuel-library_sha": "ff63a0bbc93a3a0fb78215c2fd0c77add8dfe589", "nailgun_sha": "5c33995a2e6d9b1b8cdddfa2630689da5084506f", "feature_groups": ["mirantis"], "fuel-nailgun-agent_sha": "d7027952870a35db8dc52f185bb1158cdd3d1ebd", "openstack_version": "2015.1.0-7.0", "fuel-agent_sha": "082a47bf014002e515001be05f99040437281a2d", "production": "docker", "python-fuelclient_sha": "1ce8ecd8beb640f2f62f73435f4e18d1469979ac", "astute_sha": "8283dc2932c24caab852ae9de15f94605cc350c6", "fuel-ostf_sha": "1f08e6e71021179b9881a824d9c999957fcc7045", "release": "7.0", "fuelmain_sha": "9ab01caf960013dc882825dc9b0e11ccf0b81cb0"}}}, "auth_required": true, "api": "1.0", "fuel-library_sha": "ff63a0bbc93a3a0fb78215c2fd0c77add8dfe589", "nailgun_sha": "5c33995a2e6d9b1b8cdddfa2630689da5084506f", "feature_groups": ["mirantis"], "fuel-nailgun-agent_sha": "d7027952870a35db8dc52f185bb1158cdd3d1ebd", "openstack_version": "2015.1.0-7.0", "fuel-agent_sha": "082a47bf014002e515001be05f99040437281a2d", "production": "docker", "python-fuelclient_sha": "1ce8ecd8beb640f2f62f73435f4e18d1469979ac", "astute_sha": "8283dc2932c24caab852ae9de15f94605cc350c6", "fuel-ostf_sha": "1f08e6e71021179b9881a824d9c999957fcc7045", "release": "7.0", "fuelmain_sha": "9ab01caf960013dc882825dc9b0e11ccf0b81cb0"}