Ignore gh-pages on CircleCI build + remove download message

.circleci/config.yml

@@ -3,6 +3,11 @@
 # Check https://circleci.com/docs/2.0/language-java/ for more details
 #
 version: 2
+general:
+  branches:
+    ignore:
+      - gh-pages
+      
 jobs:
   build:
     docker:
@@ -24,7 +29,7 @@ jobs:
       - checkout
 
       # run tests!
-      - run: mvn clean install --settings "settings.xml"
+      - run: mvn -Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=warn -B clean install --settings "settings.xml"
 workflows:
   version: 2
   commit-workflow: