services: cgit, git-daemon: Add description and default value.

* gnu/services/version-control.scm (git-daemon-service-type)
[description, default-value]: New fields.
(cgit-service-type)[default-value]: New field.
* po/packages/POTFILES.in: Add version-control.scm.

gnu/services/version-control.scm

@@ -156,7 +156,11 @@
           (service-extension account-service-type
                              (const %git-daemon-accounts))
           (service-extension activation-service-type
-                             git-daemon-activation)))))
+                             git-daemon-activation)))
+   (description
+    "Expose Git respositories over the insecure @code{git://} TCP-based
+protocol.")
+   (default-value (git-daemon-configuration))))
 
 (define* (git-daemon-service #:key (config (git-daemon-configuration)))
   "Return a service that runs @command{git daemon}, a simple TCP server to
@@ -259,7 +263,10 @@ access to exported repositories under @file{/srv/git}."
                              cgit-activation)
           (service-extension nginx-service-type
                              cgit-configuration-nginx-config)))
-   (default-value (cgit-configuration))))
+   (default-value (cgit-configuration))
+   (description
+    "Run the Cgit web interface, which allows users to browse Git
+repositories.")))
 
 
 ;;;

po/packages/POTFILES.in

@@ -59,3 +59,4 @@ gnu/packages/wordnet.scm
 gnu/packages/xiph.scm
 gnu/services/base.scm
 gnu/services/networking.scm
+gnu/services/version-control.scm