Revert "Temporarily deactivated webfx export"

This reverts commit e881f85.

pom.xml

@@ -76,6 +76,7 @@
         <plugin.enforcer.version>3.3.0</plugin.enforcer.version>
 
         <!-- Other third-party plugins versions -->
+        <plugin.buildhelper.version>3.3.0</plugin.buildhelper.version>
         <plugin.javapackager.version>1.7.5</plugin.javapackager.version>
         <plugin.javafx.version>0.0.8</plugin.javafx.version>
 
@@ -945,13 +946,11 @@
         <profile>
             <id>auto-plugin-webfx</id>
             <!-- We recognize a WebFX module by the presence of a webfx.xml file -->
-<!--
             <activation>
                 <file>
                     <exists>webfx.xml</exists>
                 </file>
             </activation>
--->
             <build>
                 <plugins>
                     <plugin>