6706: some translation messages were missing, update template and french translation, add better comments on POTFILES.skip

svn: r22211

po/POTFILES.skip

@@ -502,7 +502,7 @@ gramps/plugins/rel/rel_sv.py
 gramps/plugins/sidebar/categorysidebar.py
 gramps/plugins/sidebar/__init__.py
 #
-# plugins/tool directory
+# Development tools
 #
 gramps/plugins/tool/dateparserdisplaytest.py
 gramps/plugins/tool/dumpgenderstats.py
@@ -531,7 +531,7 @@ gramps/test/test/test_util_test.py
 gramps/test/test_util.py
 gramps/test/utils_test.py
 #
-#   web
+#   webapp
 #
 gramps/webapp/connection.py
 gramps/webapp/context.py
@@ -555,4 +555,5 @@ gramps/plugins/export/exportgeneweb.glade
 gramps/plugins/export/exportvcalendar.glade
 gramps/plugins/export/exportvcard.glade
 gramps/plugins/tool/check.glade
+# Development tools
 gramps/plugins/tool/phpgedview.glade