Pages with project specific content need not be presented as section to translate. For example a section like below in the top of an article is not relevant in the context of translating that article
CX1 had a configuration file listing the selectors for this kind of removable sections. See https://github.com/wikimedia/mediawiki-extensions-ContentTranslation/blob/master/modules/source/conf/common.json#L2
In CX2, I propose to do this removal of irrelevant sections at cxserver while parsing the page content. This makes the client code less crowded. Also remove the need of serving the configuration file to every client.