Change scope of vaadin-core to prevent conflicts

Author: AB-xdev

template-placeholder/pom.xml

@@ -103,6 +103,8 @@
 		<dependency>
 			<groupId>com.vaadin</groupId>
 			<artifactId>vaadin-core</artifactId>
+			<!-- "provided" to prevent conflicts in final project. It's assumed that Vaadin is already present -->
+			<scope>provided</scope>
 		</dependency>
 	</dependencies>