Separate test configuration into sections

[ivaylokenov]

• [x] Global
• [x] Controllers
• [x] Routing

Add unit tests:

• [ ] Normal classes with properties and keys validation
• [ ] JSON files should load correctly
• [ ] Fluent configuration should load correctly

Add all possible settings:

• [ ] Automatic plugins
• [ ] Replace common services
• [ ] Replace singleton services
• [ ] Resolve route values
• [ ] Authenticate all route tests
• [ ] Deep equal test levels
• [ ] Throw on missing replacements
• [ ] Do not remove with Replace, only add on top
• [ ] Others