Enhance extrafields feature. Input and output fields can be personalised according to their format/size.

Fix: Permission "read" of ecm document was not used and replaced by "download". As it is same permission, we moved back to "read" to be uniform with other modules: "read" must be first permission with number XXX1.

Fix: add permissions in paypal module

Prepare migration to use ckeditor. There is still one missing feature: Upload an image file need fckfinder plugin.

Go on tab "external access" on security menu.