Implement Avatar Modal

🚀 Feature Proposal

• As a user, I want to see a list of all avatars I've unlocked.
• As a user, I can change my avatar by clicking the respective avatar in the avatar list.
• As a user, I want to be informed whether setting another avatar was successful or not

Motivation

Avatars are one of Akamu's key ideas of gamification.

Technical Details

Implement as a modal, not as a full page/screen. After clicking the avatar the user gets redirected to the main settings screen.

Example

User "Otto123" wants to set the "elephant" avatar. He/She clicks on the avatar in the avatar list in the avatar modal. A snackbar opens to inform him/her whether the action was successful or not.