Merge pull request #2505 from adaptlearning/issue/2504

Lock dependencies to known working versions

Author: tomgreenfield

.gitignore

@@ -12,8 +12,6 @@
 /nbproject/
 /master/
 
-package-lock.json
-
 /plugins/content/component/versions/
 /plugins/content/component/componentcache/
 /plugins/content/extension/versions/

.travis.yml

@@ -28,7 +28,7 @@ before_install:
 
 install:
   - npm config set spin false
-  - npm install
+  - npm ci
   - grunt build:prod
 
 matrix: