VO14-CR Code review for QSR 1.2 Safe Element components

Code review of changes done to the safe elements (safe picture, safe text, safe image, safe message).

Definition of Done (DoD) for Code Review:

• Source code adheres to QPM - Software Development process and applicable guidelines complied with:
  • Qt Contribution Guidelines
  • Qt Quality Gate Criteria
  • Qt Coding Conventions
  • Qt Coding Style
  • Qt QML Coding Conventions
  • Qt Creator Coding Rules
  • Qt Commit Policy
  • Qt Review Policy
  • Qt Early Warning System
  • Qt API Design Principles
  • Qt unit tests guideline
  • Qt unit tests structure
• QSR Non-functional requirements are fulfilled:
  • Requirement: 3.2 .a Maintainability: Code must be modular and properly commented.
  • Verification approach: Design phase verification: Check requirement fulfillment in the reviews and static source code analysis.