Actually cache DB metadata, results, and queries with APC

Signed-off-by: Max Fierke <max@maxfierke.com>
Clear cache before running migrations.

Signed-off-by: Max Fierke <max@maxfierke.com>
Add --prefer-dist and --no-progress flags to `composer install`

Signed-off-by: Max Fierke <max@maxfierke.com>