Search Result Pagination (issue-8)

Using select2, generate paginated results.

For non-descartes sources, just get all the redis keys at once. Any attempt to
get more than one page will result in no results, which will trigger an end of
results.

For descartes - using page 0 through (end of set), pass the page upwards to
descartes. If the result set is 0 or less than 64, then you're out of results.
Merge branch 'master' into issue-8
Merge pull request #10 from anchor/issue-8

Search Pagination for Select2