nunjucks is a dev dependency (hyperledger-archives#3916)

nunjucks has a reasonably large dependency tree but isn’t used by any of the common code at runtime, just for scripting in the dev env. So should be moved.

Signed-off-by: Dave Kelsey <[email protected]>

packages/composer-common/package.json

@@ -46,6 +46,7 @@
     "mocha": "3.4.2",
     "mockery": "2.0.0",
     "moxios": "0.4.0",
+    "nunjucks": "3.0.1",
     "nyc": "11.1.0",
     "pegjs": "0.9.0",
     "rimraf": "2.5.4",
@@ -69,7 +70,6 @@
     "mkdirp": "0.5.1",
     "node-plantuml": "0.5.0",
     "npm-paths": "0.1.3",
-    "nunjucks": "3.0.1",
     "semver": "5.3.0",
     "sprintf-js": "1.0.3",
     "thenify": "3.2.1",