Update android-gradle-plugin version, add google() repos, ... - #1

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vwmattr wants to merge 2 commits into

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vwmattr:update-buildScripts

Commits on Oct 12, 2017

Update android-gradle-plugin version, add google() repos, update compile and target Sdk versions, update support version, update gradle version.
Reinman
committed
b79f6b3
Lower compile and target Sdk version to 25, lower suport version to 25.4.0.
Reinman
committed
fbee40d