Fixed the Japanese environment menu
In KiCad v5.1.7, the Japanese translation files have been unfairly changed and there are many untranslated items.
This is probably due to the fact that a file from the master branch was accidentally used instead of the 5.1 branch. I have translated the untranslated sections from the 5.1 branch source.
It works fine in my environment(*1).
Please merge my works.
(*1)My environment:
Application: KiCad
Version: (5.1.7-0-10_14), release build
Libraries:
wxWidgets 3.0.4
libcurl/7.64.1 SecureTransport (LibreSSL/2.8.3) zlib/1.2.11 nghttp2/1.39.2
Platform: macOS Catalina Version 10.15.7 (Build 19H2), 64 bit, Little endian, wxMac
Build Info:
wxWidgets: 3.0.4 (wchar_t,STL containers,compatible with 2.8)
Boost: 1.73.0
OpenCASCADE Technology: 7.4.0
Curl: 7.54.0
Compiler: Clang 10.0.1 with C++ ABI 1002
Build settings:
USE_WX_GRAPHICS_CONTEXT=ON
USE_WX_OVERLAY=ON
KICAD_SCRIPTING=ON
KICAD_SCRIPTING_MODULES=ON
KICAD_SCRIPTING_PYTHON3=OFF
KICAD_SCRIPTING_WXPYTHON=ON
KICAD_SCRIPTING_WXPYTHON_PHOENIX=OFF
KICAD_SCRIPTING_ACTION_MENU=ON
BUILD_GITHUB_PLUGIN=ON
KICAD_USE_OCE=OFF
KICAD_USE_OCC=ON
KICAD_SPICE=ON