downgrade commons-io

The current version generated ANRs such as: `Input dispatching timed
out (Waiting to send non-key event because the touched window has not
finished processing certain input events that were delivered to it over
500.0ms ago. Wait queue length: 11. Wait queue head age: 8523.6ms.)`
when listing / opening files

app/build.gradle

@@ -63,6 +63,6 @@ dependencies {
         exclude group: 'org.apache.httpcomponents', module: 'httpclient'
     }
     compile 'com.jcraft:jsch:0.1.53'
-    compile group: 'commons-io', name: 'commons-io', version: '2.5'
+    ompile 'org.apache.commons:commons-io:1.3.2'
     compile 'com.jayway.android.robotium:robotium-solo:5.3.1'
 }