Revert "When capistrano invokes god, it does it through the bootup_god wrapper."

This reverts commit ed7650fd703dd52edac231c263ce5f816d8739b8.

The change to use the "bootup_god" wrapper instead of a "bundle exec god" did not give the expected results. "bootup_god" seems to depend on the current (at the time of starting god) Gemfile, and gives the same error after the fifth capistrano redeployment.
Restart God, Resque and Resque-scheduler every time the app is deployed with capistrano, but without restarting Redis.

This should fix errors after several capistrano redeployments without restarting God, because the god process was running in a bundler environment whose Gemfile no longer existed. Now God is restarted, which ensures it works fine with the latest deployment, but Redis is not restarted by default, which minimizes downtime and possibility of failures.