Change port when selecting different FTP connection types

Currently when selecting different ftp connection types the port remains static.

It would save time when switching that the appropriate default port number is also changed.

For example:
When selecting explicit ftp set 21 and when selecting implicit set 990. Other clients do this and when I use FlashFXP I need to be careful to take the extra step. Laziness probably.

Regards,
Drew

This will be changed in v4.0