Upgrade JsInterop base and Elemental2 to RC1

Author: adrienbaron

pom.xml

@@ -49,8 +49,8 @@
 		<!-- Dependencies -->
         <gwt.version>2.8.1</gwt.version>
         <jsinterop.version>1.0.2</jsinterop.version>
-        <jsinterop-base.version>1.0.0-beta-3</jsinterop-base.version>
-        <elemental.version>1.0.0-beta-2</elemental.version>
+        <jsinterop-base.version>1.0.0-RC1</jsinterop-base.version>
+        <elemental.version>1.0.0-RC1</elemental.version>
 
         <javapoet.version>1.9.0</javapoet.version>
         <jsoup.version>1.10.2</jsoup.version>