Learned lessons (wip)
Lessons learnt.
Autocritique (wip).
Auto-critique (wip).
Self-critique.
New graphs and conclusions on hours.
Index.
Moved images to folder.
Merge branch 'master' into improving-memories

Conflicts:
	entregables/site/Docs/Proyecto/Retrospectiva/index.markdown
Minor fixes in Lecciones-aprendidas.markdown
Merge pull request #359 from AlphaGit/improving-memories

Improving memories