[CDF-271] - Upgrade jquery version on CDF
	- Replaced deprecated function $.SetImpromptuDefaults with $.prompt.setDefaults (version 5.2.4)
	- Set prefix to 'jqi' (impromptu's default CSS prefix) because the examples using colsJqi prefix were removed from jquery-impromptu.css (version 5.2.4)
Merge pull request #308 from afrjorge/master

[CDF-271] - Upgrade jquery version on CDF