Use gradle built-in shorthand notations for jcenter and google

dependencies/extension-api/build.gradle

@@ -1,11 +1,7 @@
 buildscript {
 	repositories {
-		jcenter {
+		jcenter()
-			url "http://jcenter.bintray.com/"
+		google()
-		}
-		maven {
-			url 'https://maven.google.com/'
-		}
 	}
 	
 	dependencies {

templates/android/template/build.gradle

@@ -2,12 +2,8 @@
 
 buildscript {
 	repositories {
-		jcenter {
+		jcenter()
-			url "http://jcenter.bintray.com/"
+		google()
-		}
-		maven {
-			url "https://maven.google.com/"
-		}
 	}
 	dependencies {
 		classpath 'com.android.tools.build:gradle:::ANDROID_GRADLE_PLUGIN::'
@@ -19,12 +15,8 @@ buildscript {
 
 allprojects {
 	repositories {
-		jcenter {
+		jcenter()
-			url "http://jcenter.bintray.com/"
+		google()
-		}
-		maven {
-			url "https://maven.google.com"
-		}
 	}::if ANDROID_GRADLE_BUILD_DIRECTORY::
 	buildDir = "::ANDROID_GRADLE_BUILD_DIRECTORY::/::APP_FILE::/${project.name}"::end::
 }
@@ -40,9 +32,8 @@ wrapper {
 configure(subprojects.findAll {!it.file('build.gradle').exists() && it.file('build.xml').exists()}) {
 	buildscript {
 		repositories {
-			maven {
+			jcenter()
-				url "https://maven.google.com/"
+			google()
-			}
 		}
 		
 		dependencies {

templates/extension/dependencies/android/build.gradle

@@ -1,11 +1,7 @@
 buildscript {
 	repositories {
-		jcenter {
+		jcenter()
-			url "http://jcenter.bintray.com/"
+		google()
-		}
-		maven {
-			url "https://maven.google.com/"
-		}
 	}
 	
 	dependencies {