ArchitectureDiagram quick and dirty fix
Replace ArchitectureDiagram
Remove confusing text
Add a more complete graph and comments
Merge pull request #350 from andresmoschini/fix-architecture-diagram

Fix Architecture Diagram
Clean invalid _metadata file in Proyecto
Fix links to `Manual de Sistema`
Merge pull request #352 from andresmoschini/fix-manual-sistema-links

Fix manual sistema links
Fix links to "Instalacion y Mantenimiento"
Merge pull request #353 from andresmoschini/fix-links-to-instalacion-y-mantenimiento

Fix links to "Instalacion y Mantenimiento"
VCS election retrospective.
Application design retrospective.
_metadata and index.markdown updates
Fixed links.
Adjustments on VCS retrospective.
Adjusted design retrospective.