Avoid using `$page.base$` when loading the template assets and the `assets.hostname` is specified

[samueleresca]

There are some static assets that are loaded by appending both the assets.hostname and the page.base. Few examples below:

• $page.properties.("assets.hostname")$$page.base$$page.properties.("material.favicon")$
• $page.properties.("assets.hostname")$$page.base$assets/javascripts/groups.js
• $page.properties.("assets.hostname")$$page.base$assets/javascripts/application.583bbe55.js"

The examples provided lead to the following links in case the loaded page is in a subfolder:

• https://pekko.apache.org/../assets/images/pekko_favicon.png
• https://pekko.apache.org/../assets/javascripts/groups.js
• https://pekko.apache.org/../assets/javascripts/application.583bbe55.js

Where page.base is ../ and assets.hostname is https://pekko.apache.org.

Note that the paths containing ../ are normalized by default (https://pekko.apache.org/../assets/images/pekko_favicon.png becomes https://pekko.apache.org/assets/images/pekko_favicon.png). Therefore, this issue is low priority because is not breaking resources.

This issue is for removing page.base from all the static assets loaded using the assets.hostname property