Add app icon descriptions

Author: LaurentTreguier

app/src/legacy/res/values/dimens.xml

@@ -7,7 +7,7 @@
     <dimen name="primary_action_height">80dp</dimen>
     <dimen name="image_corner_radius">4dp</dimen>
     <dimen name="avatar_size">40dp</dimen>
-    <dimen name="preference_image_size">40dp</dimen>
+    <dimen name="preference_image_size">50dp</dimen>
     <dimen name="form_width">240dp</dimen>
     <dimen name="item_height">140dp</dimen>
     <dimen name="feed_post_height">160dp</dimen>

app/src/legacy/res/values/strings.xml

@@ -144,8 +144,10 @@
         <item>@string/settings_theme_dark_value</item>
     </string-array>
     <string name="settings_app_icon">App icon</string>
-    <string name="settings_app_icon_normal">Classic icon</string>
-    <string name="settings_app_icon_alt">Alternative icon</string>
+    <string name="settings_app_icon_normal">Orange icon</string>
+    <string name="settings_app_icon_normal_desc">The classic, original style</string>
+    <string name="settings_app_icon_alt">White icon</string>
+    <string name="settings_app_icon_alt_desc">The new, alternative style</string>
     <string name="settings_about">About</string>
     <string name="settings_privacy_policy_desc">See how your data is handled</string>
     <string name="settings_terms_of_service_desc">Check the rules of the app</string>

app/src/legacy/res/xml/preferences_settings.xml

@@ -35,10 +35,12 @@
         <app.fyreplace.fyreplace.legacy.ui.preferences.AppIconPreference
             app:iconName="@mipmap/ic_launcher_round"
             app:key="app_icon_normal"
+            app:summary="@string/settings_app_icon_normal_desc"
             app:title="@string/settings_app_icon_normal" />
         <app.fyreplace.fyreplace.legacy.ui.preferences.AppIconPreference
             app:iconName="@mipmap/ic_launcher_alt_round"
             app:key="app_icon_alt"
+            app:summary="@string/settings_app_icon_alt_desc"
             app:title="@string/settings_app_icon_alt" />
     </PreferenceCategory>
     <PreferenceCategory