Updated spanish translation for tutorials-and-examples/blog/blog.rst
Update auth.rst

index.ctp view doesn't exists.
Merge pull request #1 from aleixfabra/patch-1

Update auth.rst
Fixed headers length
Model chapter (tutorial blog)
Merge remote-tracking branch 'docs/3.0' into 3-0-spanish-translations-blog
Revised blog.rst
Controller's part done
Blog Views
Blog - Adding articles
Merge remote-tracking branch 'docs/3.0' into 3-0-spanish-translations-blog

Conflicts:
	es/tutorials-and-examples/blog/part-two.rst
Data validation + added backquotes to english words + added missing paragraph
Editing Articles
Deleting Articles
Routes and conclusion
Fixes related to comments on PR
Merge pull request #1565 from elboletaire/3-0-spanish-translations-blog

3.0 - Updating blog's spanish translations