Fixed gettext usage:

- fixed gettext usage with .format() only for original text with %s
  - fixed typos
  - fixed translation yes/no buttons in the dialog.
  - improved translating sentences without "connecting" words (eg. see web/pgadmin/dashboard/static/js/dashboard.js,
     word 'cancel' needs to be translated in the Czech language as 'zrušit' but in another sentence as 'zrušení')
  - added gettext for text translations.

web/pgadmin/browser/server_groups/servers/databases/extensions/__init__.py

@@ -262,8 +262,7 @@ class ExtensionView(PGChildNodeView):
                     status=410,
                     success=0,
                     errormsg=gettext(
-                        "Could not find the required parameter (%s)." % arg
-                    )
+                        "Could not find the required parameter (%s).") % arg
                 )
 
         status, res = self.conn.execute_dict(