message: Adjust "gulp grep" for new "common" directory
diff: @@ -14,7 +14,7 @@ gulp.task("grep", ["grepCommon", "grepFrontend", "grepMiddle", "grepBackend"], (
  });
  gulp.task("grepCommon", () => {
  - return gulp.src("source/*.ts").pipe(grepFail(["/frontend/", "/middle/", "/backend/"]));
  + return gulp.src("source/common/**/*.ts").pipe(grepFail(["/frontend/", "/middle/", "/backend/"]));
  });
  gulp.task("grepFrontend", () => {
  