Install caching libraries
Cache scan output
Add the output format to the cache key

The output format was not accessible via the record class, so instead I made the Scan\View class cacheable and render that in the site view
add new fields to tables
Only set the start_time if it isn't already set
Set the date_updated field
Set the number of errors and notices
Add tests to ensure that the num_errors and notices are being set
Don't start two extra queries per page
Update all pages to populate the num_errors and num_notices
we are not using cache lite anymore
serialize the $key
Move update sql into its own file
Merge pull request #76 from mfairchild365/caching

Speed improvements