Use 2.7.0-beta1 in Maven-based samples

Change-Id: I7c57ca90a010265ac9c1c570c59ffeb17083d257

samples/dynatablerf/pom.xml

diff --git a/samples/dynatablerf/pom.xml b/samples/dynatablerf/pom.xml
index 581b58f..93f0e69 100644
--- a/samples/dynatablerf/pom.xml
+++ b/samples/dynatablerf/pom.xml
@@ -13,7 +13,7 @@
 
   <properties>
     <!-- Convenience property to set the GWT version -->
-    <gwtVersion>2.7.0-SNAPSHOT</gwtVersion>
+    <gwtVersion>2.7.0-beta1</gwtVersion>
 
     <!-- GWT needs at least java 1.6 -->
     <maven.compiler.source>1.7</maven.compiler.source>

samples/mobilewebapp/pom.xml

diff --git a/samples/mobilewebapp/pom.xml b/samples/mobilewebapp/pom.xml
index 19412ea..01f3a5a 100644
--- a/samples/mobilewebapp/pom.xml
+++ b/samples/mobilewebapp/pom.xml
@@ -11,7 +11,7 @@
 
   <properties>
     <!-- Convenience property to set the GWT version -->
-    <gwtVersion>2.7.0-SNAPSHOT</gwtVersion>
+    <gwtVersion>2.7.0-beta1</gwtVersion>
 
     <!-- GWT needs at least java 1.6 -->
     <maven.compiler.source>1.7</maven.compiler.source>

samples/validation/pom.xml

diff --git a/samples/validation/pom.xml b/samples/validation/pom.xml
index f41a134..7688850 100644
--- a/samples/validation/pom.xml
+++ b/samples/validation/pom.xml
@@ -11,7 +11,7 @@
 
   <properties>
     <!-- Convenience property to set the GWT version -->
-    <gwtVersion>2.7.0-SNAPSHOT</gwtVersion>
+    <gwtVersion>2.7.0-beta1</gwtVersion>
 
     <!-- GWT needs at least java 1.6 -->
     <maven.compiler.source>1.7</maven.compiler.source>