Gradle improvements

build.gradle

@@ -42,8 +42,9 @@ def versionName() { return version }
 subprojects {
     repositories {
         google()
-        maven { url 'https://repo.boundlessgeo.com/main' }
+        maven { url 'https://repo.boundlessgeo.com/main/' }
         jcenter()
+        maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
     }
 
     tasks.withType(JavaCompile) {

vtm-android-example/build.gradle

@@ -1,9 +1,5 @@
 apply plugin: 'com.android.application'
 
-repositories {
-    maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
-}
-
 dependencies {
     implementation project(':vtm-android')
     implementation project(':vtm-http')

vtm-ios-example/build.gradle

@@ -1,7 +1,6 @@
 buildscript {
     repositories {
         jcenter()
-        maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
     }
     dependencies {
         classpath 'com.mobidevelop.robovm:robovm-gradle-plugin:2.3.3'

vtm-ios/build.gradle

@@ -1,7 +1,6 @@
 buildscript {
     repositories {
         jcenter()
-        maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
     }
     dependencies {
         classpath 'com.mobidevelop.robovm:robovm-gradle-plugin:2.3.3'

vtm-theme-comparator/build.gradle

@@ -1,9 +1,5 @@
 apply plugin: 'application'
 
-repositories {
-    maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
-}
-
 dependencies {
     implementation project(':vtm-desktop')
     file("${rootDir}/vtm-desktop/natives").eachDir() { dir ->