[Xfce-i18n] transifex update

[Nick Schermer]

Ok everything should be online more or less...

Some of the changes:
- collections are gone and replace my collection projects.
- translation review are available again, but this time only for
translators we accepted, so no more crapy translation spam.
- filtering in the online translator.

I restored the collections for the xfce core, panel plugins, thunar
plugins and the apps. (www, bindings and libs are useless, garcon is
now in xfce core). Let me know if I missed something or you have
problems.

Nick