Updates the port to make up for core's changes of the last eight months (and we haven't even gone into freeze yet!)

Fixed bug in alphabetical pager where first letters in different case would cause terms starting with the other case not to be displayed.

The caching system has been reworked for the most part. VI blocks and VI pages using tree view are only being cached once now, since they are not pageable. Alphabetical VIs aren't being cached twice anymore. Also, the current code is more efficient.