FTP: path normalization, post-create directory edit, enable/disable

- Resolve FTP home paths without duplicating /home/domain; support absolute paths under site home
- Add changeFTPDirectory API and list UI; improve create form path help
- Add setFTPAccountStatus (Status 0/1) with Enable/Disable on list page
- Pure-FTPd MySQL: require Status='1' for authentication in install templates
- Plugin signals for change directory and account status

ftp/pluginManager.py

@@ -33,4 +33,20 @@ class pluginManager:
 
     @staticmethod
     def postChangePassword(request, response):
-        return pluginManagerGlobal.globalPlug(request, postChangePassword, response)
+        return pluginManagerGlobal.globalPlug(request, postChangePassword, response)
+
+    @staticmethod
+    def preChangeFTPDirectory(request):
+        return pluginManagerGlobal.globalPlug(request, preChangeFTPDirectory)
+
+    @staticmethod
+    def postChangeFTPDirectory(request, response):
+        return pluginManagerGlobal.globalPlug(request, postChangeFTPDirectory, response)
+
+    @staticmethod
+    def preSetFTPAccountStatus(request):
+        return pluginManagerGlobal.globalPlug(request, preSetFTPAccountStatus)
+
+    @staticmethod
+    def postSetFTPAccountStatus(request, response):
+        return pluginManagerGlobal.globalPlug(request, postSetFTPAccountStatus, response)