Finished settings dialogs and handling.

Both the ServerEditorDialog and ServerManagerDialog classes were
finished and should now perfectly(Hopefully!) work in conjunction.
The ServerManagerDialog class lists the available saved servers
from a config.ini file, and a user can Add, Edit, or Delete saved
servers. Moreover, the backend for saving the configuration settings
have all types of situatons handled. For instance, if a user adds
server with a ServerName that already exists, the user can choose
to append those changes to the already existing configuration. The
ServerEditorDialog is a simple dialog from which a user can enter changes
to the server configuration.