doc/howto_release.txt + doc/infrastructure.txt: minor updates

git-svn-id: https://svn.osgeo.org/grass/grass/branches/releasebranch_7_0@70230 15284696-431f-4ddb-bdfa-cd5b030d7da7

doc/howto_release.txt

@@ -259,14 +259,12 @@ Contents
    https://joinup.ec.europa.eu/software/grassgis/home (submit news, MN)
    http://www.macnn.com/contact/newstips/1
    http://www10.giscafe.com/submit_material/submit_options.php#Press (MN)   --> Press releases
-   http://www.freegis.org   (update, MN)
    http://www.directionsmag.com/pressreleases/ (News -> Submit Press Release)
    http://directory.fsf.org/wiki/GRASS_%28Geographic_Resources_Analysis_Support_System%29
-   http://www.kde-apps.org/content/show.php?content=19776
-   http://www.opendesktop.org/content/show.php?content=19776
+   https://www.linux-apps.com/p/1128004/edit/ (MN)
    https://news.eoportal.org/web/eoportal/share-your-news (MN)
             -> Share your news with the EO community
-   http://www.heise.de/software/download/edit_7105 (update, MN)
+   https://www.heise.de/download/product/grass-gis-7105 (update, MN)
 
    See also: http://grass.osgeo.org/wiki/Contact_Databases
    ... anywhere else? Please add here.

doc/infrastructure.txt

@@ -185,9 +185,10 @@ Details:
 Installed with g.extension
 Manuals: https://grass.osgeo.org/grass7/manuals/addons/
 
-Procedure: Addons module are compiled on build server, currently at the
-  CTU in Prague) and publishing their manual pages on publishing server, i.e.
-  grass.osgeo.org
+Procedure:
+  Addons module are compiled on build server, currently at the CTU in Prague)
+  and publishing their manual pages on publishing server, i.e. grass.osgeo.org.
+  A new compilation is triggered everytime when a commit is done in the Addons-SVN.
 
 == GRASS Travis CI ==