[Forward-port to 10.2/trunk] Warning messages on the Essential homepage

Reproduction path:

1. Generate the project using archetype 3.1.0-SNAPSHOT:

   mvn archetype:generate \
   -DarchetypeGroupId=org.onehippo.cms7 \
   -DarchetypeArtifactId=hippo-project-archetype \
   -DarchetypeVersion=3.2.0-SNAPSHOT \
   -DarchetypeRepository=http://maven.onehippo.com/maven2
   

2. Run the project, open http://localhost:8080/essentials/
3. Select Freemarker template.
4. In the Essential homepage, there is a warning message: "Requested url was not found on the server" (Please check the screenshot).