[CDE-339] Custom parameters break when the value is a string

	- PrompWizard defines an apply() function where a whitespace is being added to the end of a string value ( @see https://github.com/webdetails/cde/blob/master/cde-core/resource/js/cdf-dd-prompt-wizard.js#L159-L169 )
	- AcePromptWizard extends PrompWizard and overrides apply() function to read the value from its appropriate place, *but* did not include that whitespace addition