Merge branch 'm31_MDL-61893_Accept_Any_Node_Carbon_Version-minimal' of https://github.com/scara/moodle into MOODLE_31_STABLE

Author: David Monllao

.travis.yml

@@ -45,12 +45,9 @@ matrix:
     fast_finish: true
 
     include:
-          # Run grunt/npm install on lowest supported npm version
-        - php: 7
-          env: DB=none     TASK=GRUNT   NVM_VERSION='0.10'
           # Run grunt/npm install on highest version ('node' is an alias for the latest node.js version.)
         - php: 7
-          env: DB=none     TASK=GRUNT   NVM_VERSION='node'
+          env: DB=none     TASK=GRUNT   NVM_VERSION='lts/carbon'
 
     exclude:
         # MySQL - it's just too slow.