Implemented Maintainable GUI and added Settings for remaining fields

[ckochaneck]

Fields: - REST_INPUT_HANDLER
- REST_OUTPUT_HANDLER
- REST_ADAPTERTERM
- REST_DEFAULT_CHARSET

#10 Added Tab Handle and EnterAsTab

Implemented Advanced Features such As Copy Config Code to Clipboard and Save Config as File

[SebastianAdams]

This PR can't be merged due to the missing RestBridge/cfg/RestBridge.arc file

[SebastianAdams]

The application still throws errors when attempting to create a new RestBridge configuration. Please adjust the following:

• Escape the backslashes used in the paths before passing those to the SimpleConstantsResolver, as the resolver will use the strings as is wihtout escaping the backslashes causing wierd path names to be saved in the RestBridge config
• Close the scanner in the getConfigCode() method to free the template resource or it will be locked until the BBjServices are restarted
• Saving the config from the preview window fails (the application uses null as file name)
• In the RestBridge config program all parameters are set even though some wheren't specified(Empty). To avoid any strange behaviors, just set the default parameters and all of the parameters which the user actually specified. So for example if the user doesn't specify the program prefix, don't set the PROGRAM_PREFIX in the bridge's configuration
• Remove the "SPELLCHECKED" property from the BBjInputE fields