Adds ability to specify a specific version of jquery and jqueryui

Adds a check box to allow the admin to enter a specific level of jquery core or ui to use.  The system will still follow the auto / cdn only / local only selection but with the supplied version.  If the box is not checked the extra field is hidden to avoid cluttering up the panel

So for example enter 1.11.0 for core and 1.10.4 for UI  and it will load them (we are on 1.10.2 and 1.10.3 respectively) 

They need to name the local file as jquery-1.10.11.min.js for it to be picked up, the CDN will just "work" (tm)