added some basic unittests

changed warning/success message system to a new style
unified design of "hints" in form interfaces
fixed small bugs in "network" and "partition" plugin interfaces
"partition" and "disks" plugins: show blockdevice size during device selection
german translation for "disks" plugin added

pythonrewrite/plugins/shutdown/form_shutdown.cs

@@ -2,6 +2,8 @@
 
 <h1><?cs var:html_escape(Lang.Plugins.shutdown.Title.Shutdown) ?></h1>
 
+<?cs call:handle_messages() ?>
+
 <!--
 <p style="text-align: center">
 	<?cs var:html_escape(Lang.Plugins.shutdown.Text.ShutdownInfo) ?>

pythonrewrite/plugins/shutdown/unittests.py

@@ -6,6 +6,6 @@ class unittests(WebInterfaceTestClass.WebInterfaceTestClass):
 		url = self.URL + "plugins/shutdown"
 		self.register_auth(url)
 		self.cmd.go(url)
-		self.cmd.find('<form name="shutdown"')
-		self.cmd.find('<form name="reboot"')
+		self.cmd.find('plugins/shutdown\?type=reboot')
+		self.cmd.find('plugins/shutdown\?type=shutdown')