Use Image instead of avatar

This removes round corners

src/screens/About/AboutScreen.js

@@ -1,7 +1,7 @@
 // @flow
 
 import * as React from 'react';
-import {FlatList, Linking, Platform} from 'react-native';
+import {FlatList, Linking, Platform, Image} from 'react-native';
 import i18n from 'i18n-js';
 import {Avatar, Card, List, Title, withTheme} from 'react-native-paper';
 import {StackNavigationProp} from '@react-navigation/stack';
@@ -222,10 +222,10 @@ class AboutScreen extends React.Component<PropsType> {
           title="Campus"
           subtitle={packageJson.version}
           left={(iconProps: CardTitleIconPropsType): React.Node => (
-            <Avatar.Image
+            <Image
               size={iconProps.size}
               source={APP_LOGO}
-              style={{backgroundColor: 'transparent'}}
+              style={{width: iconProps.size, height: iconProps.size}}
             />
           )}
         />

src/screens/Home/FeedItemScreen.js

@@ -1,8 +1,8 @@
 // @flow
 
 import * as React from 'react';
-import {Linking} from 'react-native';
-import {Avatar, Card, Text, withTheme} from 'react-native-paper';
+import {Linking, Image} from 'react-native';
+import {Card, Text, withTheme} from 'react-native-paper';
 import Autolink from 'react-native-autolink';
 import {StackNavigationProp} from '@react-navigation/stack';
 import MaterialHeaderButtons, {
@@ -12,16 +12,14 @@ import CustomTabBar from '../../components/Tabbar/CustomTabBar';
 import type {FeedItemType} from './HomeScreen';
 import CollapsibleScrollView from '../../components/Collapsible/CollapsibleScrollView';
 import ImageGalleryButton from '../../components/Media/ImageGalleryButton';
+import NewsSourcesConstants from '../../constants/NewsSourcesConstants';
+import type {NewsSourceType} from '../../constants/NewsSourcesConstants';
 
 type PropsType = {
   navigation: StackNavigationProp,
   route: {params: {data: FeedItemType, date: string}},
 };
 
-const ICON_AMICALE = require('../../../assets/amicale.png');
-
-const NAME_AMICALE = 'Amicale INSA Toulouse';
-
 /**
  * Class defining a feed item page.
  */
@@ -72,16 +70,21 @@ class FeedItemScreen extends React.Component<PropsType> {
     const {navigation} = this.props;
     const hasImage =
       this.displayData.image !== '' && this.displayData.image != null;
+    const pageSource: NewsSourceType =
+      NewsSourcesConstants[this.displayData.page_id];
     return (
       <CollapsibleScrollView style={{margin: 5}} hasTab>
         <Card.Title
-          title={NAME_AMICALE}
+          title={pageSource.name}
           subtitle={this.date}
           left={(): React.Node => (
-            <Avatar.Image
+            <Image
               size={48}
-              source={ICON_AMICALE}
-              style={{backgroundColor: 'transparent'}}
+              source={pageSource.icon}
+              style={{
+                width: 48,
+                height: 48,
+              }}
             />
           )}
         />