Set debug and environment with Env variables.

You can enable debug mode now with "SetEnv FORK_DEBUG 1"
You can enable dev environment now with "SetEnv FORK_ENV dev"
Add info in index file and changelog.
Implement the WebProfilerBundle

This is shown when the environment = dev and debug is true.
Only load the web profiler routes in dev mode.
Add web profiler to the changelog.
Use the debug component for errors.

* run the assets:install command after composer install/update
* use the Symfony Debug component when in debug mode
* ignore the bundles folder, which contains assets from the bundles.
In debug mode, let debugging be handled by Symfony.

I removed all custom error_reporting settings that are now set by the
Symfony Debug component. When in production, we still have the
errorhandler that sends emails.
Cleanup more error_reporting code.

We we're putting error_reporting in because of reading the globals file,
but that's done in the Kernel, not in the init classes.

This code has been removed since it didn't make sense anymore.
Don't use the deprecated SPOON_* globals.
Add a custom profiler entry for SpoonDatabase.

This should be removed in favor of Doctrine, but this can be a good
debugging help for now.
Make the layout for the database tab better.
Merge branch 'master' into feature-debug-and-environment

Conflicts:
	CHANGELOG.md
	index.php
Remove part of merge conflict.
Merge branch 'feature-debug-and-environment'