Classroom : Convert it to ReservedArea home

[Demigiant]

• Remove language button from top bar
• Add buttons from Reserved Area (Create Teacher, Options, Info)
• Add "No Classroom" item for users that are not into a classroom and that disables classroom mode
• Close button should close the Reserved Area instead of the Classroom popup
• Add "edit name" and "delete profile" buttons inside the details, remove "edit name" from previous profile button
• Find way to load real profiles (details are not important for now)
• Add way to create profile directly from classroom, by loading the "create profile" scene in overlay
• Make "delete profile" button work from classroom if possible
• Select Classroom in game when selecting it in Classroom panel
• HOME : Make sure Classroom icon in Antura home shows the selected Classroom and that only profiles for the current Classroom are shown
• If an active classroom is already selected, skip Classroom Selection when entering ReservedArea

Header buttons:

• Create Teacher
• Options (opens popup with toggles for Notifications and Analytics)
• Info (opens popup with credits and link to antura.org)

NOTE: popups are not necessary for 3.0 milestone