Update gradle build script.

Change-Id: If5142c039b6307660402f1dbd30ded75e12f8c50
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@theqtcompany.com>

src/android/templates/build.gradle

@@ -1,14 +1,20 @@
 buildscript {
     repositories {
-        mavenCentral()
+        jcenter()
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.12.1'
+        classpath 'com.android.tools.build:gradle:1.0.0'
     }
 }
 
-apply plugin: 'android'
+allprojects {
+    repositories {
+        jcenter()
+    }
+}
+
+apply plugin: 'com.android.application'
 
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])