Adição de barra no topo com informação de login e link para logout
Merge branch 'master' of https://github.com/felipebonezi/livre.to

Conflicts:
	app/views/index.scala.html
	app/views/login.scala.html
	app/views/main.scala.html
	app/views/material/creatematerial.scala.html
	app/views/material/editmaterial.scala.html
	app/views/material/listmaterial.scala.html
	app/views/unauthorized.scala.html
	app/views/user/listuser.scala.html