Number of bug fixes(internal and mySobek) and builder multi-instance limit

   - Updated the builder to limit validation of packages in a multi-instance environment to the new package limit (currently 100), so that large number of packages aren't revalidated repeatedly. once that limit is reached, then the builder stops validating
   - Fixes for internal/stats views
       - Corrected CSS for arbitrary dates stats
       - Corrected issue with fytd (and arbitrary dates) possibly returning NULL for page count (causing an error)
       - Corrected SQL for top titles/items by usage, to omit titles/items with no usage
   - Fixes for mySobek views (sharing, bookshelves, etc.. )
       - Corrected clicking ADD or SEND in aggregation and results view when not logged on.
       - Can no longer add/remove the main collection home from your collections
       - Corrected save searches - now works correctly and displays correct text for your search (stripped HTML tags)
       - Corrected email pop-up form from the search results screens ( SobekDigital ticket )
       - Minor css correctly for email pop-up form from the aggregation home pages