Update page title separator from dash to endash

This branch will drop all the translated pages and the
documentation (will move to a subdomain later).

This branch allows gettext translation of the pieces of
text. In lib/tools are 2 scripts to generated the pot file
and compile the mo files.

(Old svn revision: 1145)

(Old svn revision: 1144)

(Old svn revision: 514)

(Old svn revision: 307)

* Moved 4.2 doc images to /images/manual/4.2 and changed src="" in the doc files.


(Old svn revision: 228)

* Fix bugzilla URL
* Removed roadmap link (not needed yet)
* Updated the credits
* Panel plugins link goes to http://xfce-goodies.berlios.de
* "What's new" is now called "Release Notes"
* Added all old 4.2.* logs
* There is a template for changelogs in the notes directory
* Changed the 404 page a bit
* Dependency(-ies) table (in build order)
* Press filled with content
* Added FAQ Anchors
* Added all FAQ titled and their anchors
* Imported some of the 'old' FAQ questions
* Removed about > artwork. We need some system to download files first.
* Various xhtml validation fixes


(Old svn revision: 214)