R3.2.a Maintanability: Check modularity and comments

Qt Safe Renderer (QSR) Non-functional requirements:

Requirement marked with a star * are categorized as safety requirement and thus critical for achieving targeted safety levels.

3.2 Maintainability

• Code must be modular and properly commented.
• Cyclomatic complexity must be below 10 for the runtime component. *

Definition of Done:

• The modularity of the software is evaluated during the code reviews. Suitable modularity is achieved and expert judgement is used to determine that. 
• The comments are checked during the code reviews. While Qt Sanity Bot checks the text against dictionary for any spelling errors, the expert judgement is needed to determine if suitable level of commenting is provided.