Move the wiki engine in the core.
-rw-r--r-- 20 .gitignore
-rw-r--r-- 1267 AUTHORS
-rw-r--r-- 17992 COPYING
-rw-r--r-- 1865 ChangeLog
drwxr-xr-x - classes
drwxr-xr-x - include
drwxr-xr-x - modules
drwxr-xr-x - plugins