remove exception.rst
General rewording/relinking of Installation in ES

Now it looks exactly like the one in english.
fixing title of installation
Merge pull request #1652 from antograssiot/3.0

3.0 remove exception.rst
fixing more titles and proof reading results fix
Removed $ from console commands for consistency
Merge pull request #1655 from spiliot/3.0-tutblog

Blog tutorial: Removed $ from console commands for consistency
Merge pull request #1653 from rvegas/patch-2

General rewording/relinking of Installation in ES
Merge remote-tracking branch 'docs/3.0' into spanish-translation-notes

Fixed Conflicts:
	es/installation.rst