Fixed IntelliJ download URL and try if -B in maven silences the INFO messages.

Author: halirutan

.travis.yml

@@ -1,6 +1,6 @@
 language: java
 jdk: oraclejdk8
-script: mvn clean package
+script: mvn -B clean package
 deploy:
   provider: releases
   skip_cleanup: true

pom.xml

@@ -75,7 +75,7 @@
                                 <!-- Download IDEA sources which are required to build the plugin-->
                                 <!-- For local testing, I included a copy target below and comment our the "get" -->
                                 <echo message="Downloading ${idea.ic.source} to ${project.build.directory}"/>
-                                <get src="http://download.jetbrains.com/idea/${idea.ic.source}"
+                                <get src="http://download-cf.jetbrains.com/idea/${idea.ic.source}"
                                      dest="${project.build.directory}"
                                      verbose="false"
                                      usetimestamp="true"/>