Improve routes ACLs
Routes ACLS are currently handled as a simple array. This is difficult to maintain in both Glatte core and plugins.
Instead of using array keys as verbatim route name for ACLS, it may make sense to use regular expressions to be more flexible.
Anyways, we should keep the existing routes parse mechanism and warning (which must be pluralized) to be able to warn about a requested but missing route in any link. Some routes may change (we try to avoid that, but this is not always possible) or be mispelled; a warning must be displayed.