Profile page names will not use spaces


The problem comes from the fact that profiles can link each other's object:

$BugTracker:tracker

If you add spaces, it breaks the parsing. An option could be to replace
underscores for spaces when looking up the page name.

Non profile pages can use spaces


But let's not turn on automatic WikiWord links. Let's continue to have IntendedLinks

Page authors

wiki_authors_style_by_page disabled to make cleaner. Did we want this?

feature_file_galleries disabled
feature_contact disabled.
Did we want this? I have the feeling they were activated by accident

Experimental features

feature_ajax_autosave disabled
Did we want this? I have the feeling they were activated by accident