Merge pull request #730 from deividmarques/reboot

Add pages and content to Practices and standards in the documentation
Commented line breaks modal.
Removed unnecessary code.
Reseting html and body overflow and height value.
Removed margin-top in all doc-title when added in cartilha-de-elementos
Implemented element’s page
fixed modal text
Fixed popover position
Creating a partial to menu.
migrating body classes to html tag
Merge pull request #731 from Wylkon/reboot

Implemented element's page
correction links menu sidebar practices