XE-1325: Integrate the Workspaces feature by default in the default XE distribution.

* Correct translation keys + add missing ones.
XE-1325: Integrate the Workspaces feature by default in the default XE distribution.

* "The users that can participate in the wiki" -> "The users who can participate in the wiki."
Merge pull request #161 from gdelhumeau/WI

XE-1325: Integrate the Workspaces feature by default in the default XE distribution
* Correct translation keys + add missing ones.