modifying tabs navagation
Adjusting yield size configuration
Add links to new tabs
Inserted logo and tabs color change
Merge branch 'InsertingLogo' of https://github.com/rodrigo14/pe-na-estrada into navigationTabs

Conflicts:
	app/views/layouts/application.html.erb
Merge branch 'navigationTabs' of https://github.com/rodrigo14/pe-na-estrada into organizingElementsInPage

Conflicts:
	app/assets/stylesheets/show.css
	app/views/layouts/application.html.erb