Merge pull request gwt-plugins#372 from ByronLudwig/master

Fixes gwt-plugins#168 Corrected package name.

Author: branflake2267

plugins/com.gwtplugins.gwt.eclipse.core/plugin.xml

@@ -299,7 +299,7 @@
    <extension
          point="org.eclipse.debug.ui.launchConfigurationTabGroups">
       <launchConfigurationTabGroup
-            class="com.google.gwt.eclipse.core.launch.ui.groups.GWTJUnitTabGroup"
+            class="com.google.gwt.eclipse.core.launch.ui.tab_groups.GWTJUnitTabGroup"
             helpContextId="org.eclipse.jdt.junit.junit_tab_group"
             id="com.gwtplugins.gwt.eclipse.core.launch.gwtJUnitTabGroup"
             type="com.gwtplugins.gwt.eclipse.core.launch.gwtJUnit">

plugins/com.gwtplugins.gwt.eclipse.sdkbundle.gwt28/pom.xml

@@ -31,7 +31,7 @@
               <url>https://goo.gl/TysXZl</url> 
               <unpack>true</unpack>
               <overwrite>true</overwrite>
-              <outputFileName>${basedir}/gwt-2.8.1.zip</outputFileName>
+              <outputFileName>gwt-2.8.1.zip</outputFileName>
               <outputDirectory>${basedir}</outputDirectory>
             </configuration>
           </execution>