Resolving bug on requirement and enlarging automatically diagrams if necessary when adding components

- folders: AvatarRD, tmltranslator, SD..., SysmlsecMethodology,
TG..., TML...,UCD...,
- override check
- function change to new drawSingleString

- override check
- function change to new drawSingleString

- removed useless elements causing warniong
- changed internalDrawing func with a new shorter one
- added missing overrides

Cleaning code and adding/fixing documentation:
- more precision
- unnecessary element removed for more readability
- as for issue 31, fixed the logo resizing for avatarPDBlock