Fix Travis log overflow, update Android SDK tools 25.2.3 → 3859397. (#824)
Fix Travis log overflow, update Android SDK tools 25.2.3 → 3859397. (#824)

* Quietly unzip Android SDK on CI.

* Update Android SDK, fail fast curl, non-verbose Android SDK install.

* Do not display curl progress, redirect sdkmanager stdout to /dev/null.

geralt-encore/storio,geralt-encore/storio,pushtorefresh/storio,geralt-encore/storio,pushtorefresh/storio,TonyTangAndroid/storio,pushtorefresh/storio,TonyTangAndroid/storio