refs #7116, refs #2001
- Changes the way Ghost errors are implemented to benefit from proper inheritance
- Moves all error definitions into a single file
- Changes the error constructor to take an options object, rather than needing the arguments to be passed in the correct order.
- Provides a wrapper so that any errors that haven't already been converted to GhostErrors get converted before they are displayed.
Summary of changes:
* 🐛 set NODE_ENV in config handler
* ✨ add GhostError implementation (core/server/errors.js)
- register all errors in one file
- inheritance from GhostError
- option pattern
* 🔥 remove all error files
* ✨ wrap all errors into GhostError in case of HTTP
* 🎨 adaptions
- option pattern for errors
- use GhostError when needed
* 🎨 revert debug deletion and add TODO for error id's
