add avatars

frontend/src/assets/previews/kamery.jpg

frontend/src/assets/template/avatar/overlay.png

frontend/src/components/Navbar.vue

frontend/src/components/canvas/Canvas.vue

frontend/src/views/angle_event_left/AngleEventLeft.vue

frontend/src/views/angle_event_right/AngleEventRight.vue

...rc/views/angle_person_event_left/AnglePersonEventLeft.vue

.../views/angle_person_event_right/AnglePersonEventRight.vue

frontend/src/views/avatar/Avatar.vue

frontend/src/views/avatar/canvas.js

frontend/src/views/base_event/BaseEvent.vue

frontend/src/views/base_person_event/BasePersonEvent.vue

frontend/src/views/basic_photo_banner/BasicPhotoBanner.vue

frontend/src/views/facebook_survey/FacebookSurvey.vue

...src/views/newspaper_quote_bottom/NewspaperQuoteBottom.vue

...src/views/newspaper_quote_middle/NewspaperQuoteMiddle.vue

...le_banner_with_custom_text/PeopleBannerWithCustomText.vue

...r_with_predefined_text/PeopleBannerWithPredefinedText.vue

frontend/src/views/poster/Poster.vue

frontend/src/views/regional_success/RegionalSuccess.vue